Yamaha is the only company paying contingency in the 50+ class, which I compete in, so I'm gonna be on one this year, after three CRF450s. I'm looking forward to getting back on the Yamaha, and owned the first year YZ400, a 2000 426, a 2000 YZ250, and 2002 YZf250. I'm hearing alot of talk in the rags about a soft motor this year, but great suspension, handling, etc. I'm wondering what some good bang for the buck mods would be for this bike....cam? high comp piston? I'd like to avoid the whole overpriced exhaust route if I could, and sort of like that new stubby silencer, but not if it chokes hp.