 In 1974, to meet federal regulations, 5 mph bumpers were added to both the front and rear.Unlike most 1970s cars, the addition of larger bumpers to the Pinto did not necessitate major changes to the bodywork.While the underpowered Kent engine was dropped, the optional OHC engine was expanded to 2.3L; in various forms this engine powered a variety of Ford vehicles for 23 years.