Installing torsion bars- shouldn't this be the easy part?
If they’re powder coated on the hexes it all has to come off. That was always my only complaint with Firm Feel, they powder coat the hexes.
Other than that I always install them with everything removed from the LCA as everyone else has already said- shock out, LCA pin nut loose, torsion bar adjuster completely removed (not just backed out), strut rod unbolted, sway bar unhooked, etc.