trac-bars and some questions

i am looking into getting the rustys 3" full pack for my 99 xj and just had a few questions. i have searched and nothing gave me a real answer. at 3 inches would i need the adj. trac-bar? would i need anything else that is not in the kit (ex. control arms). i already have a t-case drop and i would get shims, i am thinking 3* but could i go with 6* to be sure i have no vibes or is that kindof overkill? i am looking to run 31's but if i can run 32's

anyone?

Do you NEED an adj. track bar or control arms? NO. Do you NEED a SYE? NO. Are these thing advisable to get? YES. If you can afford them, get them. JIM.

if you are gona go that route i would safely say from expierence, the adj. trac bar takes a second place to control arms on the things to have list

but once you hit the 4.5 inch lift level. control arms, adj trac bar, and sye and most def going to be need for needing offroad

I wouldnt say 4.5" needs an SYE but everything else that was said will be needed.