Ive been looking for a desert tank for my bike, combing craigslist and such. Ive found a few deals for like 01 yz426s and what I am wondering is will a desert tank for a yz400 or yz426 work on my 99wr400. Ive searched and found a little info that hints i will need to change my seat to a yz seat but other than that what should i be looking for that will fit my bike? Im looking in the 3 1/2 gallon range. Thanks!