Deaver specially builds based on your Jeep’s weight, so you will need a front and rear weight before ordering. The specific dimensions of the spring are also very important. In most cases, Deaver wants you to send one of your springs in to them to use as a template. Shackle angle at ride height and vehicle stance at ride height are important as well. We wanted a touch more lift to help deal with weight and flex while keeping the tires out of the body.