i think they make a sleeve for the rear that you can adjust but im not sure. when i had all my suspension put on the guy said he'd throw the back in b/c its only like $30. but i know a bunch of people that just use washers in the back. i'd say that is the most common and when you get your car aligned, the shop will put those in for you. i think the only problem with washers is that when they go to readjust everthing all the washers fall out. thats not a big deal though

 

The skunk2 kit is just for the front. The rear is much simpler to adjust, so the kits for back there are much simpler. All you really have to do is space the upper control arm a little further away from the body and you can compensate for negative camber.

I think King Motorsports sells a rear camber kit that's similar to the skunk2 front kit, but it's like three times the price of everyone else's.