Simple and clear, this is a Flowmaster clone. It looks like one, it's built like one, and it sounds like one. I had never heard of this company before so I had no idea what I was getting but for the price I figured even if this muffler doesn't last very long what is the difference. I'm detail oriented and very critical so I took a good look at it when this came in. The only difference I could tell between it and the real Flowmaster was the length of the tacks on the inside that hold the baffles