See there? Now you are even more confused than when you asked the question. Want even more confusion? Go to the jeep forums, as your question has been a raging debate since jeep introduced the coil spring suspension back in 97'. Yes, definitely start with your lower control arms. Adjustable or not? Once you have them adjusted properly thats it, you never adjust them again. For twice the money over fixed control arms, you have something to play with for a 1/2 hour or less. If, on the outside chance you are a serious rockcrawler, and your rig is offroad way more than on road, then get the adjustables. The biggest mistake that we make with our rigs is buying stuff to bolt on that we just don't need, nor will ever make use of. Believe me, over the course of my lifetime, I've wasted enough money on bolt on stuff to buy an entire rig. Now, I use a very simple rule of thumb, KISS..