I have a 2006 gt SC. I am going to started on my build and looking to get at or close to 300 hp at the crank (reason being I want to be as fast as the 5.3L). I am running an open cone as of now, thinking about building a CAI. Next on the todo list is headers. So, what 5hp for the intake and 15hp for the headers? That brings me to 280hp? If I follow the guide on "safely modding" to run a 3.6" pulley how much more hp could that give me or that else could I do to safely achieve my goal?