http://www.streetforce.com sells those hoods. I like them but won't put one on till I have modified my engine. I will get one eventually. I don't know Street Force's price though and its based in Montreal so the price is canadian.
2007 stage 2 Satin White Pearl Subaru STi 2008 stage 2 Subaru STi hatch See my car at: Mavrik's car page
slp hood: imo way over priced! that's primered too, not painted! will cost another $300 or so for paint! and then shipping... yikes!!! you can get the ram air conversion kit, but doesn't do too much for you. if you go that route, i'd go with a short ram so the air flows over it.
I think these are wicked looking hoods, way nicer than a carbon fibre hood. Whether they add extra HP when hooked up with real ram-air or not, I would still put one on if I was doing mods.