Besides the sound of a thumping gasser gives me coldchills. I've been bench running my RCS 180 and get 8400 with a 18x8 and 8000 with a 20x6. With all the ignition I believe it weighs in close to 3.25lbs though. It has a slight burble in the mid range but it seems to change with the prop selection. But it still sounds great!