go with the ball joint spacers and shackles for a quick easy lift. Avoid blocks over shackles. With the ball joint spacers you will be able to crank in the torsion bars more and if you trim the bumpstops or replace them with flat stops you can get even more. You are only talking about a couple extra inches though. I've done this before but I did also have Downey Offroad/Rancho torsion bars.
