I got the point about not installing the front cam bolts and going to an adj front control arm for castor adjustments but how about for the rear upper cam bolts?

3.5 in RE standard lift 08 JKU with 33s for now.

 

cam bolts are cam bolts. in order to make them work, you have to make your control arm mounting hole from squares into rectangle slots and the only thing that holds them in place is a couple of washers and the compression of the bolt/nut. the forces placed on them when flexing on the trail will cause them to loosen up, come free move around in their slots. cam bolts are a cheap solution to addressing things minor adjustments to things like caster up front and pinion angle in the rear but, a terrible idea for a jeep that gets wheeled.