If he has all the receipts for the parts and any shop receipts for installation, then I'd say the price is pretty good, despite the appearance. The guy I used to know who sold cars for about fifty years said that appearance is 60% of how a car sells, so if this guy would wash and wax it, I think it'd sell better.
And this wagon is the very reason I have to stop window shopping for wagons! Fox body wagon that close! I'd go see it if only I had the time and the means!