Okay, then try J&M. There must be at least one muffler manufacturer out there that understands there is a long term profit opportunity in the making here, and all they have to do is want to take advantage of it. It never ceases to amaze me at how obtuse some businessmen are, but at the same time they'll all sit around and complain about how slim their profits are.

If J&M doesn't want to, or can't take the time to do something, go to a local machine shop and design something that you can copyright and market yourself. Any basic muffler shop could do it as well. If I wasn't going overseas you would have one made and on the way by Tuesday of next week, and I'd be advertising the product and service by the day before that.

Another idea.

Put the same request in front of Gary Allison, the previous owner of Brison R/C engines via the "Will Brison Survive?" thread here in the Gas Engine Forum and see if he wants to pick up on it. He knows better than anyone how many of his engines have been sold to date, and the market potential based upon those numbers. His answer to your question will have direct bearing on the answer requested in the thread name.

Good luck.

Pat