I've researched all the past posts for WR to YZ conversions. So I don't want more tank capacity, cams or timing, I just want a tank seat combo that will be simular in ergonomics to the YZ426. However, I don't want to buy the expensive Yamaha stock parts. My questions are..please... Will the stock 02 YZ tank and seat fit my 02 WR426? (if I have to buy stock) Is there an aftermarket tank simular to the YZ I can buy? Thanks for your help.