I currently own a 2000 gt stang (moded and dynoed at around 305 hp). I rarely push the car and drive at a safe rpm. however i tend to punch it maybe once a week on a straight near my house. Well last week i pushed my car too 90 mph on third gear....... after ishifted into fourth mar started to make loud dinging noises and knocking noises. I was wondering if any of you guys had the same problem or might know what is wrong. THANX