zol.
bazmeg
Quite a lot of L/R tank options around for the 450
http://justgastanks.com/product_info.php?products_id=427&osCsid=9a8a7e6b548bb36c31ac454248d47257
Of course, none of it comes dirt cheap
cheers, yeah was looking at the safari tanks for the drz, larger tanks on the wr450f will still not hide the fact that the mpg is quite lousy..