In 1973, Follmer competed in Formula One with Don Nichols' UOP Shadow team. He took part in his first Grand Prix, in South Africa, at the age of 39 years and 1 month - making him F1's oldest débutant since the 1950s, a distinction he still holds. In 13 Championship races, his best results were 6th in South Africa and a podium 3rd in Spain, in his first two Grands Prix, which gave him 13th in the Drivers' Championship with five points. He also competed in several non-Championship races.
In 1972 Bud Moore sold the Boss 302 to Morris Davis in Florida where the Trans Am race car was fitted with the 350 OHV V8 engine topped with Holley 4-barrel carburetor and rated at 500 horsepower. The 1970 Ford Mustang had an extensive racing career during the years and is currently part of Jim Click’s Ford Performance Collection.