Ok, so as some of you guys may have read, I am installing the box from my old ambulance on the frame of an International 4700. The big confusion has consistently been the gap between the box and cab since mine is a walk through. It is currently bolted directly to Ford van cab, I was going to leave a 2" gap and use a bellow seal. That is what everyone else does. So today at work I was getting some tool shopping out of the way on the Cornwell truck and noticed that the cab on the truck is hard mounted.
I climbed under it and the box is U-bolted with wood between the frame and the box, the cab is rubber mounted. Mind you this is a professionally mass produced rig. I would much rather hard mount mine, but was unsure of the amount of frame flex I would have. My truck is much shorter than the Cornwell truck, so now I am confused once again.