I just traded in my '07 rubicon for a new wrangler. The first thing I am planning on doing is the lift. Now I am trying to decide between a 3" or 4" lift. I've heard there is a lot more you need to add on for the 4" than the 3". on the rubi I just had a 3" with 37" tires (cut into the metal) so I don't know if there is a difference. Plus I don't want to have to deal with the chance of death wobble.. It got pretty bad on the rubi. Help??