YES YES THAT TWIN IS EXTREME CONVERSION. BACK TO MORE MUNDANE-I SAW ANOTHER SITE QUOTE POWER GAIN BY PLUGGING ONE OF TWO 7/16 IN. PIPES COMING FROM A GUTTED .31 RYOBI MUFF. TOO LITTLE BACK PRESSURE AT THE WRONG TIME AND ALL THE GAS GOES OUT THE PIPE(S) I RECCON.