Welcome Kyle. All very good advice above. If you want a Hawkeye WRX with the EJ205 you could also have a look into the import route. Japanese examples tend to be less likely to suffer from rust & generally have lower mileage. Another benefit would be even cheaper road tax than UK Blobs & early 06 Hawks. £255 a year vs £315 a year currently.
Couple of specs & brochures for JDM Hawks
JDM WRX Hawk specs: http://www.goo-net-exchange.com/catalog/SUBARU__IMPREZA/10034669/
JDM WRX Hawk brochure March 2006: http://a15ff11300g.sakura.ne.jp/catalogue/GD.GGimpreza/2006.03 impreza WRX/2006.03 impreza WRX.html
JDM WRX Hawk brochure November 2006: http://a15ff11300g.sakura.ne.jp/catalogue/GD.GGimpreza/2006.11 imprezaWRX/2006.11 imprezaWRX.html
JDM WRX Hawk WR-Limited specs: http://www.goo-net-exchange.com/catalog/SUBARU__IMPREZA/10029166/
JDM WRX Hawk WR-Limited brochure: http://a15ff11300g.sakura.ne.jp/catalogue/GD.GGimpreza/2005.8 impreza WRX WR-Limited 2005/2005.8 impreza WRX WR-Limited 2005.html
The UK has some cracking special editions to keep a look out for too.
Blobeye WRX 300 (PPP as standard) brochure: https://drive.google.com/file/d/0B6Tg7ZPMAwxqUGNuSDhDSFFLTlU/view
Blobeye & Hawkeye WRX SL. Comes with heated leather seats + sunroof as standard & the option of the Prodrive Performance Pack. When looking for the PPP, always ask to see the certificate of authenticity
as some owners never applied the silver sticker of authenticity to the car, preferring to keep it with the rest of the paper work. If the sticker is on the car, its generally located on the inner frame when you open the driver’s door,
although I’ve seen them in various places ranging from the engine bay to the top of the driver’s sun visor… Here is a picture of things to look out for on a PPP equipped WRX, although it may have had additional modifications since the PPP was fitted. I believe the silicone intercooler Y-pipe was available in both blue & red.
Prodrive recommend that 18’’ wheels & tyres are to be fitted to PPP equipped WRX's, so you may find a nice set of Prodrive or STI alloys fitted on the car too! A very rare option included the Prodrive 330mm Alcon Brake Conversion Kit as seen on the Subaru Impreza P1. I have not seen many Subaru's with this option fitted.
Blobeye WRX PPP brochure: https://impreza.co/wp-content/uploads/2014/11/2003-WRX-PPP-Brochure.pdf
Hawkeye WRX PPP brochure: https://impreza.co/wp-content/uploads/2014/11/2006-WRX-PPP-Brochure.pdf
Hawkeye WRX GB270 (PPP as standard) brochure (Higher road tax of £540): https://drive.google.com/file/d/0B6Tg7ZPMAwxqeUdXVjZTYklMSWc/view