Limited Budget, LCAS or Trac Bar?

I have a 96 2-door xj with 3in Rough Country Lift with full leaf packs, running 31 BFG AT and an ARB Bull bar, I have the usual DW and was curious which would help more, longer Lower Control Arms or an adjustable Trac-Bar? I have a limited budget since I'm a college student so I would like some opinions? Also any suggestions as to the best brand? Thanks!

Neither if stock and in good condition will cause DW's. Have a buddy get in and rock the wheel back and forth. See where the give in the suspension is. There is most likely a bad joint somewhere. Fix that first.

ALso egzamine your bushings: UCA at the axle end and make sure all your TRE's are nice and tight. Lastly when was your last alignment?