I'm running stock gearing. I'm using the stock carb, re-jetted, and the stock pipe, de-restricted, the stock air filter and the KDX200 air snorkle. Ok, here's my mpg numbers on two separate runs. Both rides were 65 to 75% dirt roads, at all speeds including runs up to 55 mph in 6th gear. And the other 25 to 35% were on the highway @ 60-65 mph, in only 6th gear. 106.0 mile ride, avg. 45F, 59.55 mpg 51.6 mile ride, avg. 60F, 61.94 mpg The fuel tank mock up is finished. The flat patterns for the pieces are ready. I think I have a source for the sheet aluminum to make up 1 or 2 tanks for testing. The actual fabrication process will not be a problem, but it may take a few weeks, between one thing and another. This fuel tank will not replace the stocker. It will be a second tank, with a "T" in at the carb, and it's own petcock and cap.