I should have done a little more research in the oversized-tank department. I ordered the Clarke tank. After I ordered it I read some reviews and everyone recommends the Acerbis tank, and no one recommends the Clarke. Here's one of the reasons: the last half gallon-or-so of gas is unusable. You can see the remaining gas in the tank is below the petcock, so unless you can wheelie your way to the gas station, you're just carrying around extra weight. I did some weighing; the tank holds 2 lb, 1 oz of useless fuel. I hate extra weight.