I have 200km on my 00 400F and I have come to the conclution that I will not be able to come to terms with the stock seat and tank combo. On tight technical hill aproaches were you have to sit down, I can not get forword enough to keep the front wheel down. My 83 CR480 has a better seat tank combo. Since the guys I ride with all have MX bikes fuel capacity is not an issue, so I have decided to buy the stock Yamaha 426 seat and tank. The 2000 yz tank is $316 CDN. My question is what parts do I need to order to get the entire seat. At first the dealer quoted just the cover ($80). I then reminded him that I need the entire seat, so he priced out the foam ($80). Is this all I need? Is this the best solution? The local dealers can not find any after market stuff for the 00.? Thanks Rob. I love this bike, it makes increadable power with the air box cover and exhuast baffel installed (You can not remove the baffel on the Canadian version, the pipe is welded up) and is as quiet as an XL125.