Hey Guys, I thought I would dig this thread up after reading the whole thing. It took over 40 minutes

I received one of these engines for free. My plan is to throw it into a boat hull. I have stripped only a couple plastic covers off.

The issue I have is I need to find a header to match the exhaust flange on this engine as I plan to use a tuned pipe with it. I know for aero purposes the pitts style muffler is ideal but while running the engine on land at 9000RPM it is a LOUD. Ideal solution is a header matched to a tuned pipe with muffler. The pipe should give me somewhere around 9000-11000 loaded prop RPM. *Remember this is in the water. That will be about 30mph on water.

EDIT - I'll snap an exhaust flange photo in a few days as nearly all the Toro's in this thread have different dimensions/shapes

Thanks for the help
Ryan