What constitutes a 1-of-1 car? It happens when you go down the list of options and find that this car was the only one ordered with a certain option combination no other car has. This gorgeous 1970 Boss 302 is available here on craigslist in Windsor, California, for $89,900. This Boss 302 is one of the few factory-documented examples, with a numbers-matching DZE 302 engine, original paint, and original interior. The documentation includes the almost sacred Marti report and statistics. Thank you very much for the tip Jack M.
The car is painted in the original Medium Lime Metallic paint and has the original Black Deluxe interior. As a 56-year-old classic, it makes sense that the owners upgraded many components while retaining the most important original parts. That’s key to transitioning back to the stock configuration if that’s ever a consideration. As it sits, this Mustang is a strong runner, sounds amazing, and drives extremely well. Rack-and-pinion steering, new ignition parts, a custom exhaust, and a Tremec TKO-600 5-speed transmission all help make that possible.
DZE engine designation refers to the specific casting of a Boss 302 engine block. Bill Maier Racing rebuilt this 302, and it has only about 9,300 miles since then. Ford engineers used the large-port, cant-valved cylinder heads being developed for the about-to-be-announced 351 Cleveland engine onto a standard 302-inch Windsor short block. The rated horsepower of 290 is widely considered conservative, with actual horsepower well over that. Factory options on the seller’s car include the 3.91 Traction-Lok rear axle, engine cooler package, Factory rear spoiler, Magnum 500 wheels, fold-down rear seat, factory all-around tinted glass, power steering, and a factory tachometer.
In 1970, Parnelli Jones etched his name into the record books by winning the Trans-Am manufacturers championship in a Boss 302. Built specifically for SCCA Trans-Am racing, the Boss 302 is one of the most sought-after Mustang models ever. The asking price listed here seems better than average, given the documentation and the availability of original parts. Can you see this Boss in your corral?
It’s not hard to love these cars. We were there when the car was first presented by IMSA and the looks alone blew us away. High WOW factor here.
Why would anyone advertise a car like this on Craigslist? This car could see 6 figures on a collector car oriented web site or collector car auction. Beautiful pony here.
I don’t believe that the car will bring anything close to that number Rustytech without the original steering, transmission, front suspension (notice no shocks sticking out of the shock towers as I believe that the steering rack is bolted to a “Mustang II style subframe) Put it back to stock and it may bring those kinds of dollars. That being said, it is a beautiful car and the modifications look to be first class. This would be fun on the track or back road twisties. I love the color and wouldn’t change a thing as it sits right now. But I in no way would pay anything close to the dollars requested. Just saying.
Welcome to Kevin, dang, lot of new writers, I hope I haven’t missed anyone. This is our “fun” place, in a sea of mishigosh. Welcome aboard.
This can be brief, for me, but in 1970, there was simply NOTHING cooler than a Boss 302 Mustang. The 429 was rarely, if ever seen,( a paltry $230 more) and 302s were much more prevalent. Some people had no issues coughing up almost $4700 for one of these,($2900 for a base 1970 Mustang) and as hallowed as they are today, most were trashed. I think about how, in 1970, it was entirely possible for some punk kid, to walk into a Ford dealer, there were plenty to choose from,,with a pocket full of cash from Auntie Em,( enjoy, honey,,oh, I will), and drive out in one of these. Too bad today, it’s a bit more than Auntie ever dreamed of. Fascinating, Captain.
Mishigosh? Thanks Howard, you done learned me a new word today. That’s a real bonus for such a schmegoogle person like myself.
Isn’t this the truth. When I was a young’un in high school in the late ’70s I wanted to get a nice muscle car to replace my lame ’65 Chevelle wagon (and how I wish I still had this car now!) Had my sights on a Mustang of whatever fast variety. This is in SoCal, so plenty of them around. Almost every one that I found was thrashed. Ended up with a Mach 1 with the base 351W 2 barrel, automatic.
Of course now like you said, you can get these in pristine shape…. for the $$$…..
Thank you for the welcome Howard. Happy to be here and away from the mishigosh myself!
The only thing this car is missing is the shaker hood scoop. I like the fact the owner made drivability choices, that positively enhanced the driving experience, but retained all the parts and the fact this car might be wearing the original paint. For what the car is, I think the asking price is fair, but still out of the reach of many people. I always thought the 1970 was the apex of the Mustang.
Wow!! And already gone.
It’s been relisted on 10/2/2026 for $82,900.
Steve R
Good catch, i think you mean 10/21/2026.
It’s a D0ZE engine block casting code, not DZE. It is an evolution of the C8FE 4 bolt main block casting used in the 1969 BOSS 302.
Goog catch on the missing 0 (zero) character in the casting number.
I was a Ford dealer partsman in the early 1980’s and caught that too.
D + 1970’s
0 = year ending in 0
F= Specific model the part was designed for
E = the design studio dept that engineered the part
Kinda rusty but it is the general jist of it.
Correct! Being an ex Ford parts guy also. I caught that too. Although I was just going to let that slide. As a side note, the camshaft in an ’86 460 has an C8AZ stamp on it. Yes a ’68 429 camshaft. BUT it’s bolted to an E8TE cam gear. That is retarded 8° for emissions purposes. Several of my past customers swapped the cam gear with the old style cam gear. Which worked really well with a fuel injected engine. It perked up the 460 considerably with no loss in (The already poor) fuel economy. (Not sure how it actually effected the emissions as we didn’t have testing in our area. But cat converters hide a lot of sins. As does O2 sensors)
for that much coin i would want it as built by ford not built like this.
70 Boss 302. It just doesn’t get any better than that! I let 2 Mustangs go during the 10 years I was getting my 3 kids through college debt free. One was a Boss, one was a Mach, well worth the trade off.
It also brings to mind when I was about to turn 16 in 1973 I had enough money to buy my first car $1000, it came down to a blue 70 Boss 302 or a blue 67 SS 350 Camaro. Both cars were in great shape but the guy would not come off his $1200 price on the Boss. So Camaro it was.
Wow! So great to see one in this shape and original paint
In 76 a friend wanted to look at cars. We rode to Nashville, one car lot had a 302 Boss. We took it for a spin, with salesman in back seat. My buddy drove like an old woman, after a while I told him to pull over and let me drive. I revved it below the rev limiter, dumped the clutch and proceeded to speed shift through the gears. Salesman was in back seat yelling at me to stop. I kept it up till we got back to the lot, I locked up the brakes and slid in the lot. He jumped out yelling at us. I told him, it’s fast but can’t keep up with my Camaro. That’s what you get for letting teenagers drive a car like that.
My BIL was looking to buy a used low mileage SHO Taurus that the local Ford store had on the lot. He asked me to drive it as I knew the cars really well. The salesman climbed into the right rear and requested that he put on his seat belt. He didn’t! The very first right had intersection had one of those short exit curves that bypasses the traffic light with a yield sign. I hit that corner at max speed and the salesman went literally rolling to the other side of the car with a loud thud of his head against the left rear door glass. He was literally blown away by the speed that car could corner. The next corner eas onto the freeway and 130 mph came up pretty quick. I cooled it after that. But he literally had no idea what that car could do. He was talking to himself when we left. The price was too high as was normal for that dealer. And BIL never found one in the color or price range he wanted.
A couple of smart Alec kids tried that on a big burly car salesman that I used to work with. He yelled at the driver to pull over and stop the car. Then he got in the driver’s seat and lectured the kids for a bit. He proceeded to give them a while knuckle ride back to the dealership. Many residents in the subdivision called the dealership complaining of screeching tires and billowing smoke. The dealership owner told us to cool it and stay off those streets for a few months.
The Boss 302 was so much fun 😊 with that being said, The 70 Z/28, AAR Cuda, TA Challenger were just as fun. These high winding
Small blocks were street survivors, far better cornering and stopping ability. Many big block cars got spanked by these cars.
What was the option that made it 1 of 1 ?
NO ONE HERE KNOWS.
.
Big Red, so hard to list all the options in the Barn Find Post. What I saw was a list of about 10 to 12 options and packages but I believe it was power steering. It was all in the Marti report.
Beautiful car. I looked at one of these back in the day, same color w/the shaker hood scoop. One of the very few times I was tempted to buy a Ford! Although my sons and I had a succession of Rangers…86 and 88 models and an 88 Bronco II. Gotta love the Boss 302 even if you are died in the wool Chevy!