You should have a dana 30 in the front and a dana 35 in the rear. iF you have a 4 banger you most likey have 4.11' gears, if you have the 6 you could have one of the following... 3.07's, 3.55's, 3.73's. or some where inbetween.
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ