Very good question. My guess is it will take a pride filled auto enthusist to keep a truck in vintage condition 30 years from its date of birth. I base a lot of this on my own 1989 chevy pickup, which is quickly approching 20 years old. It is a southern truck but has rusted cab corners, a dented hood, door & tailgate. The value of these model trucks are anywhere from 2 - 4 grand which is just a blown engine or expensive transmission fix away from being not worth the money to fix, as some people say. I happen to belive the 68 - 72 and 88 - 98 chevy / gmc trucks are the best design and durable trucks built. I guess that is why I just decieded to put a new Jasper 350 in mine and plan on patching up the body work until I have time to resto/mod it in the future. I have a 68 I am working on also, just to even things up. It's all in what you value....