Someone Is Selling A Rare 1970 Ford Mustang Boss 302 Signed By SCCA Trans-Am RacerGuessing HeadlightsAndre NalinMon, September 21, 2026 at 7:30 PM UTCAdd us on GoogleImage Credit: Mecum.A classic Mustang wearing Grabber Green paint, Boss 302 badges, a four-speed manual, and the right engine under the hood doesn't exactly struggle for attention.This 1970 Ford Mustang Boss 302 has all of those ingredients, along with the kind of restoration and documentation serious collectors and connoisseurs tend to appreciate. It's also much rarer than its already desirable specification initially suggests.Ford built 7,013 Boss 302 Mustangs for 1970, but Mecum says only 352 were finished in Grabber Green. This particular example is still fitted with its matching numbers 302-cubic-inch V8, and has previously undergone a concours-level restoration.AdvertisementAdvertisementThere's another connection to the Boss 302's racing heritage hiding inside. Its dashboard carries the signature of George Follmer, a racer closely associated with the SCCA Trans-Am Series during one of American motorsport's most memorable periods.The Boss 302 Was Built For Trans-AmImage Credit: Mecum.Ford introduced the Boss 302 for 1969 as part of its effort to take on Chevrolet and the Camaro Z/28 in Trans-Am racing. Underneath the Mustang's body sat a specialized 302-cubic-inch V8 officially rated at 290 horsepower.The engine combined Ford's small-block architecture with cylinder-head technology associated with the 351 Cleveland, including large canted valves. For 1970, the Boss also received its recognizable hockey-stick graphics and a standard Hurst shifter.This example pairs its matching-numbers 302 with a four-speed manual and a 3.91 Traction-Lok rear end. Power steering and power brakes are also fitted, while Magnum 500 wheels wrapped in Goodyear Polyglas GT tires complete the period appearance.George Follmer Left His SignatureImage Credit: Mecum.The signature on the dashboard belongs to George Follmer, whose racing résumé stretches far beyond the Trans-Am Series. Follmer raced Mustangs in Trans-Am beginning in 1969 and scored four victories through 1971.AdvertisementAdvertisementHe later won the 1972 Trans-Am championship driving an AMC Javelin and captured another title in 1976 behind the wheel of a Porsche 934. Follmer also became the 1972 Can-Am champion and competed in Formula One, NASCAR, and the 24 Hours of Le Mans.That connection is especially appropriate given the Boss 302's reason for existing. Ford's road car was developed around the requirements of Trans-Am competition, making the signature a fitting addition rather than a random piece of memorabilia.It's Headed To NashvilleImage Credit: Mecum.Mecum says the Mustang previously received a concours-level restoration that included recreating factory markings. Its Grabber Green exterior features black hood stripes, Boss 302 graphics, and hockey-stick side stripes, while spoilers and rear-window louvers add to the unmistakable early-'70s look.The undercarriage is finished in body color, and the car comes with substantial documentation. That includes its dealer invoice, window sticker, owner's manual, and an Elite Marti Report.AdvertisementAdvertisementMecum will offer the Boss 302 at its Nashville auction on September 26, 2026. No presale estimate has been published, so we'll have to wait for the hammer to fall to find out what collectors think a rare color, matching-numbers drivetrain, and George Follmer's autograph are worth together.If you want more stories like this, follow Guessing Headlights on Yahoo so you don't miss what's coming next.
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