The engines and trannies of Stealths/3kGTs aren't very good. My b/f had his engine replaced at 86k. It cost $6,400! It didn't healp that the stealership ripped him off and didn't cover it even though he had bought a warrenty........ it was "mysteriously" cancelled and they never told him. They refunded him the cost of the warrenty, but that was all. He should have taken them to court, but he's kind of a pushover and didn't want to go through all the trouble. Oh well. He said he learned his lesson. One of the previous owners probably beat on the car a bit much.