but i was very pleased with the kit and it had the most flex of any short arm kit. u will also need some sway bar discos for the front and ditch the rear sway bar. in my opinion 4" was the happy point of my zj that lift a little trimming of the bumpers a set of 33s, sliders and skids and it will go just fine+be a good dd as for gears if its a 6cyl u need 4.56 with 33's and a v8 will pull good with 3.73-4.10 . also if it has a 249 t-case get rid of it asap. for a 242 or 231. just my 2 cent hope it helps.