I've done it. In reality, you get about 2.5" out of the rears and almost nothing out of the front. To remedy this, I put a set of 2" spacers on top of the springs in the front. Even then, I still have a decent forward rake since I have no backseat and a winch on the front bumper. In order to get the rear springs to fit, you need to cut off about 1.5" from the bottom of the spring. It looks almost like the tail of a pig... Also, the shocks will work, but you might need a bar pin eliminator, or you can push the bushings out of your current shocks and into the JK ones. In short, if they're free, do it. If someone wants to sell them to you for anything over $100, it really isn't worth the trouble. I also had 150k miles on the factory shocks and springs and they needed to be replaced badly.