To be honest i dont think you can remove the uppers, i believe those are there esp. to keep the axle all in alighnment with the jeep.
i esp. woundnt do this if you drive it on the street...
2004 Rubi, 5.5" RE TL LA, Bilstein 5100's, 35" Pitbulls, RCV's, Currie AR, Warn Zeon
2013 GC HEMI