I have the ball joint spacers and a 1" body lift. If your truck is aligned now, adding the spacers alone should not mess up the alignment or overall geometry. If you adjust the torsion bars it will mess up the alignment. The spacers will allow more suspension travel and a much softer ride. But your stock shocks will limit the extra travel so you will have to space them down a bit or get new shocks. I saw someone mention that Pro Comp 317514 will work, but I just spaced mine about 1/2". You might want to get a new steering stabilizer too. I would suggest longer shackles to lift the rear.