for a ...435HP??? give or take??(at the crank). I am about 420 at the crank( 370WHP), and all I got is a simple stage 2 clutch. You must be seeking more power in the near future :). For tires, I have these cruddy KHUMOs that are only good for rain. Although, I have frequented the track enough so I know the threshold of ultimate grip. Im looking to get some better tires for the street and for the track I seek WELD racing rims with drag radials. But until then I have to settle for 12.8s.