Also check out this site :
www.nagca.com , they have alot of info on the ZJ's
I would strongly suggest not going any bigger then 34's , and also build some rock rails before you take it any where . I was very impressed with mine and would still have today if it wasn't for the ecm issues it had from time to time. Mine had about 4-5 inches of lift on RE control arms welded in the rear with 33" tires .
