And last but not least, the car came with a limited-slip differential with either 3.91:1 or ... the 1969 Mach I Mustang worked great for the 351 Cleveland, which was the standard engine for ...

Ford’s Spring Special Mustang of 1971 was a bold attempt to reinvigorate sales by offering Mach 1-inspired styling ... equipped with a 351 Cleveland V8 engine and a four-speed Top Loader manual ...