Generation IV Internal Engine - Few Q's about LS2... 450RWHP?

My friend is looking to get some more power out of his C6

What would it take to get 450rwhp out of a 07 M6 C6?
Car already has a Vararam and Corsa Sport Cat back.... Would adding a cam and headers get it to 450rwhp?

Also, how much HP can the drivetrain hold? Is this something that will need to be upgraded asap or can it hold that kind of power?

Im pretty new to LS2s, What are the most popular cams for these cars and what do yall reccomend?

Thanks

I am speaking from GTO experience but you could do this with bolt-ons and a cam... I am talking full bolt ons though, CAI, 1 7/8 LT headers, Fast intake with TB, and a more aggressive cam like the HPE S-Cam. That will come close if not hit the 450 rwhp mark. Otherwise you could do a bit more mild cam and get a set of heads. Also a good tune is ofcourse going to be needed. Thats for the NA route, you could always just do some FI or a nice shot of N2O and hit that mark.

cam (S-cam or Hellion) + LT's + Clutch + Tune