A buddy of mine just put a gt30r on his 05 legacy gt. I had the privilege of being there yesterday afternoon for the dyno tuning. Stock the legacy is putting down about 170 awhp. At 10 psi we put down 316, and at 18psi we put down 362. The car could EASILY be over 400, but on 91 octane and the stock clutch this is plenty lol. Next up will be a new clutch and an e85 conversion.