I will be making header soon that will be specialy designed to work with this manifold and for k24 engine that revs to 7800rpm. Than dyno it and see what it does. Calculation is that it will make 265hp. As you know first supercharger kit wasnt making this much power over srock. So plan is to sell it as a package. But will see how it goes in testing. As of now this manifold works and car is 0.35sec faster than before.