To add, since the SJ series have very short leafs, it's best to add an expandable shackle setup. Not only does this provide slight lift (<1"), but provides better droop due to the separation of the expandable. If you really want to take advantage of the expandable shackles, swap your rear leafs up front as they are longer, then this will also relocate your axle ~1" forward, add Jeep CJ springs to the back, add the expando's, add longer travel shocks, and you'd be ahead of the game.