GPHeaders header mockup kit is great for every unique application. This system is for an LS engine being put into a Detomaso Pantera. These 304 Stainless Steel Headers were made from the customers supplied header kit for a one of a one of a kind exhaust, without the vehicle ever leaving his location. Since all of our collectors are hand made to each order, we had no problem building this custom Stainless steel 8 into 1 header.