They all look the same for the WRX. It's because all the other cars copy the WRX for their bodykits. Would you rather have an Accord look like a WRX or the other way around?
Here's a selection:
http://www.autosportz.com/bodykits_0...u_imprezza.htm
http://www.xcceleration.com/itemdetails.cfm81.htm
It's just my opinion, but it would only be worth it to save weight (carbonfiber), and for aerodynamics (keep in mind it you have to go 75mph plus for wings, spoilers, and diffusers to actually work).