Muffler Testing, etc.

Three inchers do not have much space to play with internally but I think Joe is messing with them now. By the way, I have no connection to Waldron's; I just turned the project over to them as they are a well respected company and I was just a person doing it for fun. I make no money off sales or anything.
Email Joe and he can let you know about sizing.

It is a pretty cool idea and they are fun to mess with. Tom