Barely used, This header was used for about 150miles. Has 2 1/2 inch collector. Comes with gasket and a/c line shields. Fits Integra GSR and Type-R. New it cost over $1,100 Mugen 4-1 Header - JDM B18C Type-R w/2.5" Collector - JHPUSA Asking $650. Located in Tampa Florida. call 813 842 5517 -Neal Sutton