ok here is the deal i just put in a new tremec 500 and new yoke with it. now at highway speeds of 60 plus i get a vibration in the drivetrain. it is more serious or just more noticeable with speed increasing. if i push the clutch in and coast it gets worse then if it is in gear. not realy noticeable to me in town driving normal. i am thinking it is just a u-joint that is causing this. maybe i did something to it putting in the new yoke. i tried spinning it 180* but nothing helped there.