Since you think the vibration is in the back, rotate the tires from front to back and see if the vibration follows the tires.. If it moves to the front then the tires/rims might need some attention, if not then must be something else. It would be a quick way to check before throwing a bunch of money at it.
--Kyle
67 Verdoro Green 400 Front bench w/auto on column Now excepting- free, ready to bolt on, Pontiac Aluminum Heads... Thanks to John(Hammered)-- This project is REBORN!! http://s903.photobucket.com/albums/ac237/lupdiesel/
