PaceSetter 70-3221 Long Tube Exhaust Header CNC-machined, port-matched thick steel flanges provide postive seal at the head and unrestriced flow into the primary tubes All tubing is mandrel-bent, 16-gauge carbon steel for excellent durability Available with standard black paint finish or optional ARMOR*Coat metallic ceramic coating Unsurpassed fit and easy to install with basic skills Gaskets included