http://oldcarbrochures.org/NA/Ford_-Mustang/1974_Ford_Mustang/1974-Ford-Mustang-II-Brochure/1974-Ford-Mustang-II-14-15 1974 Ford Mustang II Mach I (Old Car Brochures)] The downsized vehicle - fitted with the 2.8 L V6 rated at 105 horsepower - outsold the Mach 1 models of the previous four years.