I was hoping this thing would be done already, but you know how life gets in the way, right now I am at an Army school, so it will have to wait till I get back. According to Road Rescue (the people who made the box) the box weighs around 5500 pounds empty. When I completely removed everything that was not bolted down and weighed it it tip the scales at 10053 pounds. I am guess the van cut away chassis must weigh about 5k as well? I figure that with ten poly mounts, it should not settle too much more than an 1/8 inch. They are pretty stiff, but should still absorb some twisting and vibration. Since this is truck is going to be used mostly on paved surfaces, I am hoping that I have accounted for enough flex for a rigid cab to box mount setup as recommended by Road Rescue.
1994 International 4700 powered by a DT360 (5 years and still working on it)
1990 Ford Bronco II