frame off restoration, i have a 78 f-250 4x4 that somebody cut the frame and shortened it, they did it to put a 74 model short bed body on it. it came all put together and i have dissasembled it, when i go to put it together, are the 74 and 78 bodies the same enough to order mounting stuff for either or should i order specifically for the frame (78) or the body (74)?