So I was swapping a rear LCA from my parts WJ to my DD. I had a front LCA and noticed that the bushings were the same. I had just watched a vid where a guy changes bushings with a sledge and thought "what the heck" so I tried it. In about 3 minutes I had the decent front LCA bushing out and swapped it in the rear lca and installed it on the side I hadn't worked on.
Things to know from this experiment:
1) the bushings interchange between front and rear LCA's
2) You really can change them in a couple minutes with a hammer.
Just in case someone wants to know. Might even save a few $$