I addressed my vacuum leaks. It really woke up this old big block. I can't believe I overlooked that... oh well. I can't wait tp put the trailer behind it again and see what it does.
As it turns out I was browsing the classifieds and found me some doors in the same town I was in last week at the off road part... 150 miles away. Why didn't I find them earlier? They are Suburban rear doors with factory tint. There is just one spot of rust on the bottom inside of one door that I need to deal with. $100 for the pair isn't too bad.