I saw your other post about the vibration ...
1) I had the same problem when I purchased my car. My wife would complain that the car shakes. I found out that I had a siezed U-joint on the passenger side half shaft.
2) They can be removed without taking off the A-Arm. To make things easier, I undid the 3 bolts holding the exhaust to the header to move it out of the way.
3) Normally Half shafts are dynamically balanced. It is important that you put the parts together (with the new U joints) in exactly the same orientation. I made little marks on the pieces to keep things the way that they were.
4) Do both sides at the same time. I prefer the replacement U-joints with greasable zerks.
HTH
B.G.
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