FWIW I bought an 85 crew cab with cummins conversion, decent paint, auto for $5500. I saw one on 1stgen.org for the same amount.

I am going to convert mine to a manual(hopefully a 6 speed) so it tows better. I would encourage you not to sell it, unless you don't tow very often. I needed a truck to pull my gooseneck with and haul my family. A standard cab won't cut it with a wife and three kids.

Michael