Here is what a complete set looks like:

http://good-times.webshots.com/photo/2235943390102454676FUuGUv

The shims can go to the frame or the body some have none at all. I have seen some trucks that have as many as five shims. The threaded lock plates go inside the cab to prevent the bolts from pulling through the sheet metal. If you install new rubbers in them and clean them up they work as good as new.