Hello, Mr. Murray: That is a lot of miles. From my many years of buying cars and restoring a few, here is my two cents: Interior: I have a '94, and I can tell you that GM has discontinued most or all of the interior trim panels for our rigs. So make sure it has intact panels and that they have not been repeatedly removed for some reason, because they have very thin mountings for the clips and they routinely break off upon removing them (the clips are very tenacious in gripping sheet metal). Carpet can be replaced with aftermarket reproduction, and you can get aftermarket door panels upholstered in the factory colors from LMC. Seats can be reupholstered by a good upholstery shop to look original or like something else. Exterior: Rust is not your friend. Too much is a reason to not buy the truck. Check all points where the body mounts to the frame. Some rust will absolutely not be visible unless the rig has the glass removed and is disassembled. That stuff you can't worry about unless you are tearing it down to do a bare metal repaint. But there are other places it can show up such as mounting points, rocker panels and under the carpeting near the door entry areas or under the area where the driver's feet are usually sitting. Any extensive rust on the cab sheet metal is going to be very labor intensive to repair. Also check the tailgate and around the tailgate for rust.\ If it is in good cosmetic condition, you can fix any mechanical issues. You don't want a truck with a lot of cosmetic problems, because it is expensive and labor intensive.