The Outback responds very well to minor modifications. Just adding a GPMoto intake and Unichip PnP system can net serious power gains. The GPMoto 4-2-1 equal length header will give you a nice european sound to the exhaust while dramaticly reducing the restriction in the exhaust before the turbo. The combination of the intake, header, and unichip makes for a quiet sleeper that still has the power you desire.