Arch,

Provided they are not too restrictive, it sounds like putting cans of just about any sort doesn't really affect 4-strokes one way or another other than for noise.

What about those hose couplers? Is there any magic to using the right kind on these motors? The flexible kind sound like you can route them more or less where you want but I see that there are also some solid ones made for the same application.

I'm basically thinking of an inverted installation of an FZ53 with a wrap around "header" which would mate to the pipe/muffler in the center bottom of the fuse - much like it would be done with a 170DZ on an F3A model. Would prefer to keep it light so not sure whether the muffler would be preferable to a smaller pipe.

David.