How about this one ? Back in the 70's we were on the way to the MX races with my Chevy C10 van and 2 bikes on the trailer. The fuel pump died and of course we HAD to get to the races, so we removed one of the tanks and the engine doghouse, rigged up a connection to the carb and gravity fed the engine with a hand held tank the rest of the weekend until we could buy a fuel pump Mon AM. It was summer of course and noisy with no engine cover, but we were kids and happily suffered through to salvage an MX race.