That's right, you did read correctly. A muffler. This ain't your regular muffler however, this puppy came off a million dollar 750kw generator! 40" in diameter and 8 feet long build from 1/8" thick stainless. Yea baby. I've seen so many wonderful and ingenious builds on this forum that I would like to draw upon your collective wisdom to help me make this a success if not an adventure. Here are a couple of pictures of this monster and an idea or two that have been dancing around in my head. Idea number one: Vertical inline. Stand this monster on end, use one flange opening as the firebox air intake, use the other flange opening as the chimney outlet. Each opening is 13-1/2 inches in diameter. I would cut out bottom section with the flange to make a door with built in round air inlet. Cut a couple of doors above that to place shelves for food. Weld in a firebox to smoke chamber separator. Attach a chimey to the top flange with a 90 degree elbow. Seems like a simple enough plan. Waddayathink ? I'm looking for any suggestions. Thanks.