i have a 2008 wrx and i just replaced the stock cd changer with an eclipse avn 2100 navi deck... its very nice and matches the interior perfect! my only question is how do i hook up the steering wheel controls... i believe i need an adapter of sorts but i couldnt find one compatable with subarus... any help would be amazing, thanks!!

 

per their site, it should work.
http://www.autotoys.com/x/product.php?productid=597

You'll have to investigate this further to make sure all is well with it.

 

I don't know how well I would trust that link above ^ Peripheral is the leader in electronic interface and they haven't even come out with anything for the 08 impreza yet.