All GHL products are built using only the highest quality “American Made” T-304 & T-321 stainless steel. All tubes are precision mandrel bent and everything is hand TIG welded by skilled craftsmen in Mesa Arizona. Factory mounting locations are used wherever possible to insure a quality fit every time. All GHL Headers and Mufflers come with a Lifetime Warranty on workmanship and Materials.

GHL’s R & D department and developers of the Patented “Non-Resonance Technology Muffler” in now offering the only Legal Patented aftermarket Catalytic Converter Header System for the 1978 to1994 Porsche 911SC, Carrera and C2/4.

Most GHL products can ship in 3 to 5 days if not sooner. GHL will make every effort to honor quoted delivery dates.