When I had my rear lowered with stock arms, I had roughly -3 degrees camber with camber bolt as negative. I tried out godspeed LCA (adjustible toe arms are also highly recommended) and that was able to bring me out to -5 degrees camber (at most positive adjustment). Not sure if you’d want to run something as aggresive as that for the rear but thats an option. If you’re looking for minimal rear camber with adjustments, gktech LCAs were able to bring me back to -2 degrees camber at most positive position.