Allow me to ask a potentially stupid question. Obviously changing tires between Sand and Trail is a pain in the ass and I am looking for a spare rear wheel to make this less of a problem. I have found one wheel that I might be able to purchase, but it off a '98 yz400f and I have a '02 yz 426f. Are there any differences in these bikes that would disallow the two wheels from being interchangeable? Finally, I live in San Diego and if anyone else has a spare rear wheel in the area would you be willing to sell it? Thanks!