American Classic sells an interchange manual of parts numbers in their literature section for 1/2ton to 1 ton trucks.
Look it up under your year model to see if it applies or not.
For the big bolts, you'll prolly have to hit the swap meets, auction sites, etc..
So, peruse the vendor sites under: literature, books, manuals... etc..
Searching is all part of the aggravation of old trucks.
-W
