Just curious,when you say body mount,do you mean the part that is welded to the bottom/under side of the cab..or the bushing..or the bracket riveted to the frame? I called a guy in Ga. today to talk about a cab for my "79" dually,and he said if I want a cab with the factory doghouse cut-out I have to get a 4wd cab.My truck is 2wd and I want to know what I need to look for.