I am currently running an 06 wr 250. Love it. I am looking for some more power and I am debating over pipe and cam for the 250, go two smoker, or go 450. In your guys opinions would a yz 450 be good for tight single tracks? Would I need a FWW? I would probably drop a tooth on the front sprocket, I don't think the e-start would be an issue nor the light. I am just wondering if it would be a great trail bike. I would prefer the yz over the wr because of the weight issue. Any info or suggestions, ps I am about 220 lbs if this makes a diiference.