Flowmaster's Scavenger Series Elite long tube headers are designed to replace the restrictive factory cast iron manifolds. These high quality headers are manufactured from stainless steel and are ceramic coated for maximum durability. They feature 1 3/4-inch primary tubes, 3/8-inch thick flanges and incorporate Flowmaster's popular 3-inch ball flange collector connections, ensuring a leak free installation. Scavenger Series long tube headers deliver maximum performance and are suited to the enthusiast who wants the best. Like all Flowmaster products, the benefits include improved throttle response, power and engine efficiency. Designed for an easy fit, these headers include gaskets and necessary hardware for easy installation. Notes: Will not fit Saginaw close ratio with 825 power steering box. Big block frame stands and motor mounts must be used to ensure proper engine location and header fit. Will fit Detroit Speed & Engineering front sub frames with rack and pinion steering. Does not fit with Powerglide transmission. Does not fit column shift automatic transmission in Camaro. This product is legal only for off-highway use or racing use in California and/or states that have adopted California emission standards, or for use on pre-emission controlled motor vehicles/motor vehicle engines (pre-1966 domestic vehicles certified to California standards, pre-1968 domestic vehicles certified to federal standards and all pre-1968 foreign vehicles, per the application guide.