I posted Dyno results in the middle of this Invidia thread ///7113&page=6 (should have started another specific thread) gains with the new Gemini were good, just a hair under 7WHP and 8.6 Lbs of torque. The 06' 45 had issues with the fitment due to slightly longer cats but earlier years have no fitment problems form what I understand. If you can still get the member discount Gordon was offering awhile ago its a GREAT system as a true dual in quality SS. Nice sound at start up and under load (not too loud).