I have 3.5 lift on my 94XJ, can I add JKS ACOS (coil spacers) 1 1/4" min, and shackles without changing my Rubicon control arms? or if anyone has a 4.5 lift can you give me center to center dimensions on you lower control arms, I just need that extra 1.25" for bumper weight compensation. and a little more tire clearance. Thanx for reading the lengthy!!