One of the most desirable factory Mustangs was undoubtedly the Mach 1. Though the 1969 Ford Mustang Mach 1 came standard with a 351 Windsor V8, it was also offered with the 428 Cobra Jet powerplants. With Ram Air induction and heavy-duty internals, the Mach 1 428 Super Cobra Jet was rated to develop 335 horsepower and 440 lb.-ft. of torque, continuing the hot rod heritage of the Ford Mustang.