Hi, I have a NEW unused inverted Pitts SMOKE muffler for SACHS 3.7, ZDZ 40, P50, and other engines. I bought this muffler to use on my Zenoah G-62, but it DOES NOT FIT! (even though the previous owner said it would!) This is an extremely well built muffler, and unlike most smoke mufflers today, this one has a fully built-in smoke coil! This pre-heats your smoke oil, before it enters the exhaust stream, making thicker, more dense smoke! Most so-called smoke mufflers only have a nipple, and no coil! This particular muffler was built from lightweight stainless steel, with 9 inch down pipes, so you'll have plenty of room to exit your cowl, and trim to make a true custom fit! Price one and you'll understand that this is a DEAL! I'm asking $75.00 or best reasonable offer for this custom exhaust! Thanks for looking!