I am doing full rebuild on mine right now. What I found is that the ***** are not replaceable on the upper control arms. You have to replace the whole arm. There are listings for just the ball joint, but those are for aftermarket (moog I think) control arms and wont fit the factory control arms. As I was told, there is one version of the drivers side control arm and 2 versions of the passenger side.

On the pass side it will look like this:



Or this:





Those are from rock auto. I have never ordered from them before but after this will definitely do it again in the future. Parts were about 60% of the cost from autozone level type stores. Order arrived in 3 days to my door. Not bad.