I need help figure out the price of my 1979 Pontiac Grand Prix?

[Joe]

I have a 1979 Pontiac Grand Prix with the 301 v8 engine stock engine and exhuast with a 3 speed automatic transmission. The car has 111,300 miles on it. Its show room, no rust, has bigger tires but on it,because previous owner was going to put a bigger engine in it but did not have the time. I need help deciding on a price I have gotten offers for 6 grand, 5 grand, and 4,700, but I just recently decided to sell it for a 4th gen z28 camaro. The car has never been abused and every will maintained. I am big into performance cars and it cost me close to six to seven grand to get the car the way i want it. So i decided to trade it to get a base of 275 hp instead of 165 hp. O I live in Erie, Pa If you live within driving distance Ill send you pics of the car if your interested in it. Thanks for the answers