Headers Shas Fتك 16 and below, two sensor holes, 3-inch exhaust, steel. It was bent and installed on a salon Fتك, and I straightened it now. I don't know its story or its company. The headers are free of leaks and welding. It comes with a conversion from 3 inches to approximately 2 inches. If I'm not mistaken, it fits the original muffler.