So you know, MOST 2.5" coil lifts will yield well over 3" of lift. At that height, you will need to address things like your sway bar link if the kit you're looking at doesn't come with new ones and brake line extension brackets at least for the rear. Even if the kit comes with new rear links so that you can install your factory rear links up front, you need to be aware that the later can still be too short especially on a Rubicon. When disconnected and flexing, short links can hyper extend and fold over your tie-rod. Also, unless the shocks you're getting are short enough to help prevent your front drive shaft from making contact with your exhaust cross over, you will ruin the slip shaft boot. Of course, this is the least of your problems as your taller stance will put your front drive shaft in a steep enough angle to cause your CV boot at the output shaft to be in a constant state of pinch. Sooner than later, this will cause the boot to fail along with the bearings inside.
With all that said and assuming you're on a budget, I would recommend getting a 2.5" coil spacer lift as that will get you to the exact height you're wanting, address most of the problems listed above and can be had for cheap. Otherwise, I would recommend you look at more complete 2.5"-3" coil lift.
