If you just want to fix the camber, all you need is a control arm to fix that...
Tuner motor sports Rouge Engineering @ m3motorwerks
The stock control arms don't offer enough adjustment at all. Max of about a degree so you need aftermarket arms to get it done.
I certainly wouldn't flatten it out to 0* but you don't want it too much more than -5* for your tires sake (and it looks like you are about -5*). I think stock is 1-2 degrees negative.
It's obvious in your sig that it's a little too negative

Hmm, I sware I saw a pair somewhere for only $200...