Any idea how much I could get for my 1990 Mazda 626 GT 5 door? It has 168,000 miles and is in EXCELLENT condition. I'm trying to decide if I should trade it in (for another Mazda 6s 5 door) or try to sell it. I don't know if I'll get much in the open market, but a Mazda enthusiast may be willing to pay more.