Their engines(diesel) did, not sure about the new 6.7L but have to say this about Ford trucks, they have one hell of a frame and suspension underneath them, don't have to worry about weak azz drag links, wheel bearings and the "front ends not strong enough to support this Cummins" I always hear. Ultimate truck, buy the Ford Chassis(450/550), Cummins engine, Allison transmission, put them all together rig'd out.