Camaro/Firebird 98-2002 LS1 Flowtech Headers, Coated (pictured) and Non Coated (black), comes as a pair shipping is not included, choose the style and application below, call for shipping quotes These tuned length headers have all emission control devices accommodated. They are built with 1-3/4" primary tubes that improve the engine ability to breathe over the stock manifolds. 18 Gauge Thickness, Flowtech headers come finished with a baked on high heat resistant black paint or for a show look or with a Metallic Ceramic Thermal Barrier Coating. This coating provides improved thermal stability reducing the possibility of header cracking. The high luster finish is rust resistant and acts as an insulator resulting in higher exhaust temperatures within the system to increase performance while lowering the under-hood temperatures. Included:gaskets, hardware and O2 extensions.