Go on and post on to every buy and sell subaru page on fb should be able to track a set sometime try scoobynet some breakers there aswell worth a try
Here's set but kinda expensive?
http://www.ebay.ie/itm/2007-2012-SUBARU-IMPREZA-WRX-STI-Half-Leather-Recaro-Interior-Seat-Door-Cards-/401348267656?hash=item5d72388e88:g:mWoAAOSwjk9ZQ2OW