I am running stock 10 pack leaf springs on my CJ. Believe it or not when I had the Jeep restored 25 years ago I wanted all oem so I had the leaf springs made custom... well.. they don't ride so well. Terrible in fact... I want to buy a Skyjacker lift kit. My Jeep seems to sit pretty high right now as it is(I'll measure my bumper height later). I am leaning toward what they call the 3.5 / 4 inch lift... Any reason not to do the bigger lift? Guessing pitman arm and brake lines.. anything else?