my 86' 740t (143,000 miles) has serious play in the rear end resulting in a loud clunk upon deceleration ( downshifting ) and a vibration during takeoff. i don't seem to be having luck finding a rear end rebuild kit or parts online. i've done this job before on other vehicles but i need help finding the parts for this job.
thanks
brad

ps.
it's not the center bearing, u joints or trans, i already took care of those parts. also need a gas tank o ring from when i replaced the fuel pump. i'm not sure what the actual dimension is but it is the BIG one.