"UltraJohn" wrote

Essentially they homebuilt their own "Glass Pack" muffler avaliable at
most
auto parts stores.

But at a fraction of the weight!. Those things are heavy!

I also believe the Auto store's glass packs are built with a steel tube,
instead of stainless mesh for the inner tube. They are not nearly as
effective, because of that reason.
--
Jim in NC