About $2000 to be exact. Anyway, as some already know I have an AEM CAI, and bypass currently installed. I'm thinking to get the the Mugen 4-1 Header, and Mugen Sports Exhaust (blows my $2000). Or, save the $2g's and get a Jackson Racing Supercharger (I know...that makes me a hypocrite...but I want the speed!). Someone talk me out of the Supercharger, or tell me a better way to spend my $2 g's (other than internals). I'm thinking an exhaust and header are necessary next steps...to add to the intake (anyone else understand what i mean by that? lolx).