"The problem was / is that I want to restore it back to GM specs but get stuck on the 427 parts."
Its all good. The car has always been known as a super car in my neck of the woods. The late boyfriend of the girl who owned the car before me wrenched for a NHRA Div. 1 B/M Camaro in the "Grumpy" days. So with out him and paper work its what we call in my profession a "cold case".
I have researched all that I can short of Paying Joel for confirmation.
Expert Testimony.