OK I know its not a new 450 but it still runs strong. I I got stupid the other day and rode my friend 08 KTM 450sx. Then I realize how much power the old 400 is lacking compaired to the new 450's. No I don't, and won't be buying a new 450. I need to know what I can do to get somemore top end out of it. I see most of the cam's all say they work best with the 426 and up cc. My motor is for the most part stock with a wiesco 12.5:1 piston in it. Any Help wouold be appreciated.