About three years ago, I found one for a fellow bolter. We looked for quite a while to find a 53 5 window longed GMC and they are difficult to find. He found a decent one running, licensed and virtually rust free. He paid $5000 for it and has been doing work to bring it up to his standards, but was quite happy to find it.
At that time I would say, to find a decent 53 GMC longed, they were priced between $4000 - $7500 and up. We found a nice restored one for $15000, but that was higher than he wanted to pay.
Post some pictures of yours, and when you decide to sell it, post it in the swap meet section with your asking price.
