The frame rails start out at 39" apart behind the cab and end up at 46" at the end. So I think I can fab some 46" cross members to attach to the bed's cross members. As for the length, I dont think it will be too much of a nuisance to have it shortened.
My other concern are the boards that run along the top of the rails to mount the bed on. As I mentioned the rails are 46" apart at the end, but they reach 46" just behind the rear axle. So there is about 18" where the rails are the same distance apart, but the portion of rails behind the cab to the back of the rear axle are tapering out. This creates an angle along the top of each rail that seems to prevent mounting a solid wood beam down the length of each rail. Any ideas?
Thanks very much for your help.
