I thought about using the Pitts style muffler in the beginning but decided that I was still going to have to cut a hole in the side of the cowl anyway. So, I used a J'tec muffler instead. It was extremely noisy and leaked gunk all around the the edges of the muffler. It is a two piece design and screwed together. IMO it is a poor way to build a muffler.

I thought that you might like to see how I built a quiet muffler out of .030" (20ga I think) steel sheet and brass tubing. It weighs 7 oz which was about the weight of the aluminum muffler.

The Giant Aeromaster with a G-62 is a great flying plane. Mine came out at 20.25 lbs.

Ken