Well, I sold my Cannondale E440 and went for a 2000 WR400. Haven't had a chance to ride it much yet, looking forward to it. Does anyone have the Yoshimura comp full exhaust system on their WR400? I was looking to change out the stock system. Any other recommendations? Looking for added horse power. Also, would you recommend changing to the YZ timming? I'm 6'7" and 285 lbs so I need all the extra power I can get. Thanks for your help. I'm looking forward to learning about these bikes and what mods make them better.