To shed a little light on this subject, I have a friend that has this combo on his car. Everything mentioned in the kit minus the Intake, he is running the cobra intake and let me tell you it sounds NASTY. As far as horsepower is concerned, i dont know though, he has yet to get everything broken in and is fighting an idle problem right now. Also this is on a 130k stock shortblock, but ill guess its gonna hit 300hp if not very close on the chassis dyno. One thing though, the valve covers that come with the kit do not have an oil fill hole. Your gonna have to drill.