I have an 03 400ex with a 416 weisco piston, hot rod crank. I am wanting more power. I was thinking port and polish the head, bigger valves, cam, lightening the flywheel. But I don't know what cam to get. I do all woods riding and hill climbing. I was thinking stage 2 hot cam or an HRC cam. My 450r has an hrc2 cam and I like it. Just wanted to get yalls opinion.