Dudes, Great board, been lurking for some time. I've been lusting after a WR450 for a while now but it but it looks like the 04 will be Red Stickered. No big deal UNLESS I want to ride it between Memorial Day and Labor Day. Thanks California Air Resources Board. I am considering trying to locate a low hour WR426 as anything 2002 or older gets a Green Sticker (no use restrictions). My question is to those who have ridden or owned both bikes. Is there enough of a difference to make it worth it or should I just keep tweaking on my 400 and call it good for now? Also, are there any significant differences between the 01 and 02 WR426's?