Hi Shaun, i can confirm that the Krazyhorse stage 1 was very noisy, ear shattering indeed. But that was a year ago.
The G56 exhaust is quieter, but it may come with all the add-ons. Krazyhorse have made a pair of exhausts to my pattern, i have no idea how they sound. I am unable to upload an image at the moment, so john`s 3 wheeler Scroll down to image lol.8jpg. These exhausts are oval not round.