Vibration

Well, I had to finally break down and replace the Clutch, Pressure Plate and Throw Out Bearing in my 96 GT last week...Took it to a Transmission shop and they replaced everything and sent me on my way...had to go back the next day because the clutch pedal was vibrating violently on acceleration and deceleration. Owner said he wound up trying three more pressure plates before he went back with an OEM replacement. Now when I'm driving down the road, I feel a slight vibration that actually feels like it is coming from the rear end of the car...I can't feel anything in the gear shift handle, and it really isn't too bad, just noticeable...any ideas???

drive shaft is warped.........

Suggest you check your tire balance, and even the lug nuts.