** All of the wood blocks were 1 5/8" when removed from my orig. untouched 53 Suburban. **
Thanks once again. The repro blocks all seem to be 2" or more. That could explain why my body is sitting a little higher above the frame.
I spent today fabricating replacement body mounts and marking their positions on the frame for final welding after I take the body off the frame. This isn't a restoration so I had no qualms about not using original mounts. I'll add some photos when I get them done.