Remove the nuts on the brake strut rod, otherwise the strut rod will keep the LCA from moving. Then loosen the nut on the LCA stud. Back the nut out until it's flush with the end of the stud. Stick a 2x4 over it and give it a whack. The LCA stud should bust loose and the LCA will slide back along with the torsion bar. Remove them together, then work on getting the LCA off the torsion bar.
Don't remember the size of the bolt heads.
If you were just going to swap out torsion bars, I know this is making a bigger job of it. If you're taking it all apart anyway, then there's another alternative.
I got everything loose, then lowered the K member onto a floor jack. Then the torsion bars came out easily by wiggling stuff around.