Hey 2-Wheel Gurus, I've got a line on a 72 2WD. However, the body is trash. If I found a 4X body, what differences am I looking at? I'm guessing they are cxompletely interchangeable. One difference I would guess would be the tranny-tcase bulge on the 4X floor. Anything else I may have to look for? K-5...Soccer moms inquire within.