Hey everyone,

I have a '90 GXL with a stock LS1/T-56 swap.

I was getting on it earlier and it wheel hopped in 2nd pretty bad, and I heard a loud clunk sound come from under the car... as I slowed down the car started bucking real badly and heard the clunking coming from under the car again... it does it really badly coming away from a stop at low speeds, but on the way home on the highway is would occasionally give a slight buck, but otherwise it was driving fine.

I noticed coming up my driveway that if I was going slow (like, under 30 MPH) it does it really badly, but once I get moving it's not that bad... it also acts up in every gear...

So, what does everyone think? Time to upgrade to a TII rear?

 

Are the only things needed to swap a TII diff into a FC the diff and axles?

 

driveshaft also