ii was just gonna say the same thing.
since you will have it apart might be worth your time to pull the lower control arms(one at a time, should be as simple as hitting them with the impact to spin the nuts off) and check the bushings.
of all the ZJs White out and I have done (i think i've done at least 7) i've never removed a set of stock arms that didn't have worn out bushings. not saying yours are bad; just saying check them.
92 YJ ~ back at it
RIP 95 ZJ ~ 33s built/longarmed/locked/awesome Feb 2014 ZJOTM winner