I have a complete switchable exhaust system with Y-pipes to divert thru props from a 1989 twin engine boat that is in like new condition. These were used on a pair of circa 1989 Mercruiser 454 365hp motors. I believe this was a mercruiser stock system, but honestly don't know much about it. Comes with Pneumatic pump (1), pump lines and hose mounting clamps, exhaust switch (2 sets of 2), y-pipes (2), switch for helm (1), and wiring from helm to pump. Never used them myself, they came with a boat I just bought less power. Will provide 30 day money back guarantee, you pay return shipping though.

Open to offers, what does the group think it's worth?