Stop in for a cup of coffee
If they ever come out with an assembly book for the later a-bodies there's a lot of info in those drawings.
Talk with Barry - I think he actually owned some from the 70s. He couldn't have them posted on HH 'cause Chrysler wanted to offer the reprints for sale.
Which after a few years finally happened for the 67-9 a-bodies, 69 engines, and maybe a few others?