cisurfer

I have a vibration coming from the rear/center console area of the car. I had 373s in the rear and swapped them for 410s and J&M lower control arms and everything was fine...i then changed out the U-joints and changed my struts and added CC plates and Bumpsteer kit and thats when the vibration started. It comes at 65mph+ more noticeable going to 90 and decelerating to 60mph...I changed the rear bearings 3 times and i even swapped my friends 02 Gt driveshaft in and still does it, this wekened i changed everything out to new parts which are

-Moser 31 spline axles
-03-04 cobra t-lok
-Ford racing "C" bearing kit (axle bearings as well)
-changed U joints again
-Changed output shaft seal on tranny
-Ford Racing bushing for upper control arms in rear housing
-Ford Racing rear end girdle and new fluid
-New ford pinion flange
-Swapped rear wheels and tires



someone please have an answer to this problem, i spent ALOT of money trying to solve it and its driving me crazy, Its a speed sensitive problem not RPM so its tranny back