sorry, its a rage header from kteller, the craftsmanship is beautiful, its the only stainless header that is actually worth the money, well then you got sparks, but i think they discontinued it. The header is a slip fit design which sliped on beautifully, the springs help ensure no leaks come about. If anyone is looking for a GOOD stainless header for less than alot of other quality headers, look no further than a rage header.