Well, starting getting a wooga-wooga in the Bel Air going down the road, figured it was the carrier bearing, pulled it out and it had seen better days. Problem is, after replacing it and it's u-joint I still have the vibration. Not trying to borrow trouble but I'm looking at the possibility the pinion is going out. Question: what year rear-ends are a direct swap for 60 Bel Air? Up through 64? Later? May wind up having to swap it out while I rebuild the dif. I gotta pick myself up a driver one of these days. thanks