I am looking at a 98 WR400f. It seems like a goob bike for a good price. The guy has replaced the stock tank and seat with that of a 2000 YZ426. He said the stock tank was too wide. He has also replaced the rear fender with the YZ fender and has it fitted with an aftermarket tail light assembly with a license plate holder. He has also installed mirrors on the Renthal bars. The bike is licensed for road use in Washington. I intend only to trail ride with the bike. He also said that he has just replaced the clutch basket, plates, spring, and cable. Is there anything in particular that I should know, or ask about this bike. I would assume that you all think this is a good bike, but I'd still like to hear your opinion. I have been riding a YZ250 but do not do much mx track riding anymore.