I just got an 88 S-15 longbed from my father in law for free(good price) It only has 81,000 miles on it but body is quite beaten. I am looking to keep it mostly stock, and just keep it useful. What are repairs/maintenance things that i should do right away, or be prepared for? Already 2 issues I have are a sagging drivers door, sagging headliner, and dome light that doesnt go out. Any easy/common fixes. Thanks all for your input.