hey all. Not sure if this thread belongs here or somewhere else, but here goes. A buddy was telling me about a 77 k20 at junkyard by me. I called out there. Im going to check it out. The question is what should I look for? I already know the sheet metal is bad. But they claim the frame is good. So as far the frame goes, what should I be looking for? Any answers, good or bad are appreciated thanks!