Not sure how the body is supposed to be attached to the frame. I looked at my 46 pickup to get an idea about how to attach the body to the frame and I believe the steel cross-members sit atop wood blocks and a rubber pad. I am unsure how the ends of the cross-members are attached to the body. Is there wood between the body and the cross-member or is the body sandwiched between the cross-member and the wood floor? Also, does anybody know the spacing of the crossmembers?
Here is a photo of the body with some cross-members loosely placed.
37 panel delivery floor