Almost anything to do with the frame is different too. The frame is a couple inches taller, so fuel tank brackets (if it's not in the cab) suspension attachment components, steering attachment parts, etc may all be more rare. Also, My '47 1 ton came (best as I can ascertain) with no rear shocks. I guess they figured the suspension was so heavy that shock absorbers would never be needed. If you remove leaves to improve the ride, you may end up fabricating in some shock brackets.