JBA 1850S-3JT 1-5/8" Shorty Stainless Steel Titanium Ceramic Exhaust Header for 03-06 GM Truck/Hummer 6.0L 03-06 Mandrel bent stainless steel tube Patented JBA Firecone collector Factory style emission connections Extra thick collector domes 3/8 inch thick CNC laser-cut flanges with oversized exhaust ports