See the GM Heritage center that Uncle Brad mentioned... there is some handy information that you can download for free.
The assembly manual for our 60-66 trucks has a lot of great diagrams in 'em, but there is no index or guide in it... you just have to flip around until you find what area you are looking for.
All of the information in those packs from the GM Heritage Center are derived from the shop manuals and various sales literature... most if not all of which are available at a
parts vendor of your choice. At least... from the packet I had sent to me and the one I flipped through that I downloaded.
a guide to the 1960-1966 truck manuals -W
