the pipe was made by Westcoast if I am not mistaken. It is not an Aftermarket Pipe. Westcoast use to make the OEM pipes for Seadoo as well, they may still do so, not sure.
Cannot tell you how well it would work, I can tell you that it will only work on a couch with the waterbox to the rear of the motor without doing some crazy rerouting of exhaust lines.