Originally Posted by Diesel911

In my case it was the rotted out rubber on the Lower Control arm bushings that caused the inner tire wear and obviously tilted inwards at the top wheels.

I all so had 1 Upper Control Arm with bad Ball Joint (you have to replace the complete arm when this happens).

Opinion time:
The thing is both the Upper and Lower Control Arms have Rubber Bushings. In practice the control arms do not pivot on the bolts.
When you tighten the LCA and UCA bolts it renders the center tube in the bushing stationary and your both control arms pivot on the elasticity of the Rubber. That same Rubber gets old and hard over time an the stress on it.
If an LCA Bushing goes bad it puts more stress on the LCA Bushing and visa versa.
So you may or may not get away with only changing only the parts you think are worn/no good.

I also found that (my Car came origionally from the East Coast) that the inside bore of my Lower Control Arms was severly rusted (I have a thread on this). After the heavy scaly rust was beat out the bores were too large for them to be reused.

It used to be that suspension/alinement shops offered a free inspection. You might take it to a shop and have them inspect it but not have the work done there.

In my case I bought an after market kit on Ebay for around $250. I will not list all of the parts but it came with 2 Upper Control arms, 2 Lower Ball joints and 2 Lower Control arm Bushing, 2 tire rods, another rod like the Tie Rods but connects to the Pitman arm and a Bushing kit for anothr part of the steering.
I did not use the whole kit but I figured that when you start working on things you often find something else is wrong in the process; so I bought a whole kit.