Based on the Ford Pinto, the initial Mustang II production design was done by young Ford designer Buck Mook and was personally selected by Iacocca The new model, however, was "less of a Pinto than the '64½ had been a Falcon." Two body styles were available; a two-door notchback coupe and a sportier three-door "2+2" hatchback (also referred to as a "liftback"). A folding rear seat was optional on the notchback coupe and was standard on all hatchback models. "2+2" also accurately described the rear seat capacity according to period commentators. Weight distribution was front-heavy, with a 1974 V6-equipped car having 58 percent of its weight over the front wheels. The Mustang II was also the first American car to have power-assisted rack and pinion steering.