I have no idea why but when I hit about 80 MPH in my 73 Rallye the center of the car vibrates like the cars going to fall apart. There is no vibration in the brake or gas pedal or steering wheel, I only feel it where the center console is. There are absolutly no other vibrations until I get to about that speed. I have New Tires and just got everything balanced thinking it might be that. I also checked to see if the drivetrain is twisted or off balance neither one was bad. The only thing I can think of would be the motor mounts it appears that the left side is broken but I was told that wouldnt do it.. Any suggestions???
Norm