Getting the old torsion bar pivot bushings out of the LCA was a learning curve for me. I think someone here told how to do it. Here are some pics of my process in case you are replacing them.

1. Use the Mancini tool to pull out the bushing, usually you only get the inner steel tube and rubber.
2. The difficulty and reason for this advice is: 90% of the time it leaves the outer steel sleeve inside the LCA.
3. Identify the sleeve left in the LCA and cut 4 slots in the walls of the sleeve that project out from the LCA.
4. Use a chisel and hammer to collapse each of the 4 sides inwards. This creates that funny '4-star' shape of the sleeve after removal in the pic below.

The goal as you might imagine from the pics below is to create a condition in which you can use a slide-hammer to hammer the sleeve out from the LCA... (In the pic below, the threaded rod and bolt with giant socket is my home-made slide hammer). The collapsed walls provide something that grabs the slide hammer.

A bit complicated to explain in words, I hope the photos help.... good luck!