My airplane had a side hanging muffler.

It attached maybe 1/3 down from the front.

It was a long tube and down the center was a threaded rod.
Spaced here and there - tuning ? were disks with holes.

Some put SS wire - like SOS pads but SS - most of us just
had air. - OH - the back end had a pipe out the side - 1/4 of the
larger tube.

Martin
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Martin Eastburn, Barbara Eastburn
@ home at Lion's Lair with our computer
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder