Far and away, the absolute best quality header made for the 16v Sidekick and Tracker. We use a THICK 3/8" head flange that eliminates warping and leaks. It's also port matched to work on the Suzuki's circular exhaust port. Other headers use a round port. What does that match? Unlike other painted or chrome plated headers, our header is the only one offered with a lifetime warranty. The CALMINI header add horsepower and increases fuel economy. Installation of this kit is fast and easy with complete hardware and detailed instructions included. A great performance value for your dollar. Complete kit includes header, upper flange gasket, spacers, lower flange gasket, hardware and installation instructions. Direct bolt-on replacement for factory header! ** Not for use on pollution controlled vehicles **