I would get that truck in a heartbeat if it is a 1 ton. If it's a 3/4 ton, I would pass that up. 3/4 ton has a strong frame but, a weaker rear and front differential. If you were going to use it in a truck pull competition, you should make sure that it's a 1 ton and not a 3/4 ton. I would pay 500 for a 3/4 ton in the condition that you described.
Respectfully,
David