For anyone that's interested, Clarke should have their '06 YZ450 2.8 gallon(+/-) tanks ready by the end of this month (March). Comparing the aftermarket tanks that I've seen and used, I think the Clarke tank is a very good fit and quality for a reasonable price. I had no problems with the one I had on my '03, too bad it won't fit on the '06. That's ok, pretty much everything else I had on the '03 won't fit on my new '06 either. The tank will be about the least expensive of all the things I had to replace.