Also please remember raising the back end alters the caster angle. It reduces it and if you go far enough you get a negative caster angle. Doing this will make your truck steer more easily but will make it wander around with much less ability to control it. I've had friends raise the rear of their AD truck, do nothing to the front and make it flat scary to drive. You must end up with the right amount of caster designed into the front axle when you are finished. Good luck.
