I have a 1996 GT and when I drive from 0-40 MPH, it drive fine. But between 40-70 MPH, it has a loud muffler like noise. Keep in mind that I'm deaf and had someone in the car to describe me the noise so I can post this thread. The noise goes away when I'm making a slight right road curve but remain straightaway and left curve. I'm thinking bearings, rotors, and such but wanted to know what others know or experience the same problems and can pinpoint this for me. I also rev up the motor to see if there's a exhaust mainfold leak but nothing happen, I drove to 50 mph and shift in neutral while rolling at 50 and the noise is still there even not pressing gas at all so I figured that I don't have exhaust leak. Help? 
