Originally Posted by fraser9764

These arent the same as mike rainbird sells, mikes are very thin toe shims that toe the rear wheels in slightly. This improves tyre wear and gives the rear a more centred feel.
The camber shims may be better than nothing, but not comparable to a six degree beam. They dont correct the toe changes under compression and extension, causing instability under braking etc.
Granted there is a big difference in price though...
Diff mount is also a good investment to improve handling