BBK 10-15 Camaro LS3 L99 Long Tube Exhaust Headers With Converters - 1-3/4 Silver CeramicBBK Performance full length long tube exhaust headers offer unsurpassed quality and fitment using top quality materials and American craftsmanship. Every long tube exhaust header system is hand built with CNC mandrel bent tubing for unrestrictive exhaust flow and maximum performance, 3 8 in. laser cut flanges, patented scavenging collector design and gasket less ball and socket connectors for easy installation. Every exhaust header has been designed