Mileage claims, especially those that are extraordinarily low, must often be taken with a grain of salt. However, the game changes significantly if the figure is documented. Such is the case with this 1987 Ford Mustang GT Convertible. The seller holds paperwork confirming that the odometer reading of 29,000 miles is genuine, and its overall condition is all you might expect in this case. I must say a big thank you to Barn Finder T.J. for spotting the GT listed here on Craigslist in Petaluma, California. They set their price at $21,000 for a vehicle that appears to need nothing.

Ford planned to replace the Fox-Body Mustang in the mid-1980s due to flagging sales but elected to perform a mid-cycle styling upgrade instead in the face of a considerable outcry from potential buyers. The “four-eyed” look was consigned to the pages of history as the company adopted a more “aero” appearance that drew inspiration from the SVO model. The seller states that they are this classic’s second owner, and the fact that it has a known history will increase its appeal. The overall condition is impressive, courtesy of a few key factors. The car has spent its life in a dry climate, has never seen rain, and has been garage-kept since Day One. Therefore, the lack of issues with its Oxford White paint is unsurprising. It holds an excellent shine, and the panels are as straight as an arrow. The seller states that the underside is in as-new condition, retaining many of the markings applied at the factory. The soft-top is as tight as a drum and hasn’t discolored. The wheels are a later addition, but the seller includes the originals in the sale. The plastic is in good order, and the glass is clear.

Ongoing development meant that by the time our feature GT rolled off the line in 1987, the power and torque figures for the 5.0-liter fuel-injected “HO” V8 had climbed to 225hp and 300 ft/lbs. The first owner teamed that motor with a four-speed automatic transmission and power assistance for the steering and brakes. The car’s performance began to match the figures available when the First Generation Mustang hit the market, signaling that Detroit was finding ways to claw back power and torque that had dribbled out the exhaust during The Malaise Era. The seller includes a host of original documentation tracing this numbers-matching classic’s history from the day the first owner took delivery. This includes paperwork verifying the odometer reading of 29,000 genuine miles. The Mustang recently passed its Smog Check and is a turnkey proposition that can be enjoyed immediately.

Okay, let’s get what some may consider the only interior shortcoming out of the way fairly quickly. The seller confirms that the original stereo has made way for an aftermarket unit. That might make some question the car’s survivor credentials, but with the factory AM/FM radio/cassette player included in the sale, reinstating it shouldn’t take much work. Otherwise, there are no other apparent changes or modifications. The upholstered surfaces, in cloth and vinyl, look excellent. The outer front seat edges have avoided wear that often develops with age, and the carpet is clean. Spending its life sheltered from the California sun has allowed the plastic to remain well preserved, and there is no appreciable wheel wear. Potential buyers craving a combination of performance and comfort will welcome the air conditioning, power windows, power locks, power front seat lumbar support, power mirrors, and cruise control.

Finding anything to fault about this 1987 Mustang GT Convertible is seemingly impossible, and reversing its few minor changes would take little more than a weekend’s tinkering in a home workshop. The odometer reading isn’t the lowest we have seen over the years at Barn Finds, but the fact that it is verified is a positive point for those considering the future investment potential. The price looks competitive in the face of recent successful sales, and this classic has been on the market for under a day. You may need to act fast in this case because I suspect the seller will have little trouble finding the GT a new home.