Does this have a bushing ?

You can press the LCA pivot pin out easily with just a press. The press will go down into the torsion bar socket, you'll obviously have to support the other side of the LCA without using the pivot pin so you can press it out. Then you can go after the rest of the bushing as described in the article inkjunkie linked.

Or, if you're installing poly bushings, leave the inner shells alone and just press out the pivot, pry out the rubber, and put the poly bushing in using the old inner shell.