Fatpaulie

ok smart ones, I have a 05 m6, its got a air raid cai, lg motorsports headers, no cats, corsa x pipe and axle back, and a dyno tune. car put down 375hp 393tq. im getting my heads ported and polished and a cam, what cam not sure. im wanting to get to as close to 500 to the wheels as possible n/a. and it still be very streetable. am I looking for to much out off a port and polish and cam? and I would like some advice on cams, im not real cam savey.. and what else should I get with it, push rods, rockers? any help is greatly apprieciated...