When you buy an old Mopar, what’s your “gonna have to do “ list

I don't know about online repair manuals. The one I bought my Volvo S90 was mostly unusable. So go for an old book. The reason a friend who knew I had the 1963 Dodge Dart gave me her 1966-1972 Motor manual. The Chrysler section is starting to fall apart. So I've been trying with the idea of taking pictures of that part of the book. Which eventually I'm sure I'll want to share it on a one on one basis because some lawyer smelling a payday might sue me. But the usefulness of this book is immense. Even has sections on rebuilding starters and alternators.