Lets make sure this is clear because I don't like to put words in anybodys mouth especially when they are ridiculous. Your assertion is that a BME55 on pump gasoline is going to produce double the power of a YS four stroke, the current model would be the YS140 limited as the 120 is NLA, running on YS's recommended fuel, 20-30% nitro methane in methanol. For the record my example of that engine weighs 32.3 oz and will turn an 18-12 8100 rpm static. FYI YS known for being conservative rates that engine at 2.9 BHP.