Muscle car sales declined in the early 1970s thanks to rising insurance premiums. And demand was also stymied by lower compression ratios to reduce emissions output. So, it’s no surprise that 1973 Plymouth Road Runner sales couldn’t break 20,000 units (compared to 80,000+ in 1969). This ’73 Road Runner has a crate motor installed, but a fuel delivery problem prevents it from being drivable. The seller would rather have the garage space than continue to work on the car, so this Mopar is available here on craigslist. From St. Johns, Florida, the asking price is $15,000. Another Plymouth tip brought to us by “Zappenduster”!

With the 1971 B-body redesign at Chrysler, 2-door models received different styling from 4-doors and wagons. The cars also took on the “fuselage” look that began with full-size Chrysler Corp. products in 1969. A refresh occurred for the 1973-74 editions, in part to accommodate larger bumpers fore and aft to withstand low-speed collisions better. The Road Runner was less potent than before, with a 318 cubic inch V8 now standard, though it at least had dual exhaust. Bigger engines were still offered.

We don’t know which motor this Road Runner left the factory with, but a new 360 cubic inch V8 lives in the car now. Some additional work is needed to get the engine running smoothly. The Plymouth has an automatic transmission, but at 137,000 miles we don’t know if it’s up to the job. A Flowmaster exhaust system is in place, so the RR should sound great under acceleration.

The seller says the body needs work but the photos shown in cramp quarters don’t help identify if the seller is talking about rust or dents and dings. What we can see of the contrasting-colored interior seems okay and the car has bucket seats. There may not be much movement on the seller’s asking price since he/she admits to not being “highly motivated.” With a new engine, the seller’s price is certainly more digestible.