Hi redfiretop, first off CONGRATULATIONS! it sounds like a very interesting car that we would all like to hear more about!!!
Depending what get from GM, you might consider getting a reprint of your cars documentation from Pontiac Historic Services
http://www.phs-online.com - they do charge a fee for the service, but the information they provide is invaluable.
I don't know if you realize that your post is actually under an existing post I created about the Vacuum Door Locks I have on my 1969 Model J car - I don't think you meant to post it one level higher so that everyone can find out more about your car!
Cheers!
Liam