Umm, it may just be the Sears in my area, but they have the most up to date equipment, everything computerized on flat monitor touch screens w/ a virtual model of the alignment in progress. They welcomed me to watch, I asked, (had to wear saftey goggles), and the guy doing mine actually knew what he was doing, so that was a relief. I told the guy which Ingalls kits I had (xtreme on the front, and the +1 to +3 degree $25 Ingalls spacer, washer/bolt, kit for the back). He loaded those Ingalls kits on the screen, and it told him how they adjust... pimp.

He got everything almost dead center of spec (came with a before/after/spec print out sheet of camber, caster, toe, cross camber, cross caster, total toe).

Spec for rear camber is -2.2deg to -1.2deg.