I DIYed the Ground Control camber plates against stock suspension. Based on this DIY article.
http://www.e90post.com/forums/showthread.php?t=15397
It was tough!. With the stock springs being so long, it's difficult to get enough compression to fit the camber plate in, which is thicker than the stock top hat assembly that it's replacing. The nut on the top of the strut was also a b_tch to both remove and install. Without a top open wrench set, I was not able to torque it down to 55ft-lb spec. That said, by just using a pair of gripper pliers to hold on to the bear metal strut, I have way more thread past the nut than shown by the OP without trimming any of the camber plate bushings.
Stupidly, i managed to scratch by hood by the garage door in the process. Most seems to be in the clearcoat... guess that's what I need to work on next after the car is back from alignment.