I have an opportunity to buy a 57' F100 3/4 ton. The guy cut the frame and put a short bed on it. I'm pretty leary of his butt welds on the frame but he said he has a 1/2 ton frame for it too. Do you know if the cab mounts are the same on the 3/4 ton as the 1/2 ton? What about the bed mounts, etc. There are so many variables here that I'm not even sure what questions to ask. Basically can I take the 3/4 ton body and put it on the 1/2 ton chassis?