I'M NOT A PRO! I'M SIMPLY SHARING MY EXPERIENCE! Get a professional alignment after your done.
Anyways.... hope this helps.
FYI - I installed Skunk2 lowering springs months earlier.
1. loosen the lug nuts, jack up the car, set it on a jack stand, take off the wheel. Attachment 246745
2. jack up the the suspension so that it won't go anywhere when you take off the stock arm. Attachment 246769
3. the arm has 3 attach points. a bolt up front Attachment 246809 and two bolts going into the frame. Attachment 246817 the rear bolts are hard to get to. i used about a 9 inch extender on my socket wrench. Take those out. Then take out the bolt up front. the black nut is secured in place by a small bolt. take it out and life is easier. Attachment 246777Attachment 246793
4. If you install one like this SPC brand rear camber arm, you will want to follow the instructions for setting the length. i extended mine almost to the max and will let an alignment shop do the final tweaks.
5. Now just put it back together! NOTE that when you go to unscrew the two rear bolts on the passenger side, the exhaust will be in the way. Fortunately it comes apart right there. If the bolts are rusty and you feel like you are trying two hard to get them out, they might break, like one of mine,, so don't end up like me with a broken muffler bolt.