Brand New Pair of Southwest Speed Painted Flat Black Long Tube Headers for 1967–1974 Big Block Mopar 383–440ci Engines (Part #440-2666). These Southwest Speed headers feature 1-7/8" primaries flowing into 3" collectors, complete with a pair of 3" to 2-1/2" reducers. Designed with a SAP port shape for more performance and better fuel mileage, they come ready to install with gaskets and mounting hardware included. Applications: Chrysler: 1967–1974 Town & Country Dodge: 1970–1974 Challenger 1967–1974 Charger 1967–1974 Coronet 1967–1969 Dart Plymouth: 1967–1974 Barracuda 1967–1970 Belvedere 1970–1972 Cuda 1967–1974 Fury 1967–1971 GTX 1968–1974 Road Runner 1967–1974 Satellite Notes: Will not fit models equipped with air injection or angle spark plug cylinder heads. Features: 1-7/8" primaries to 3" collectors Includes a pair of 3" to 2-1/2" reducers Sap port shape More performance Better fuel mileage Includes gaskets and mounting hardware Painted flat black to resist early corrosion Header specs: Material type: Steel Header tube type: Full length Flange thickness: 3/8" Finish: Painted flat black Hardware included: Yes Gaskets included: Yes Tube outside diameter: 1 7/8" Collector diameter: 3" Reducers: 3" to 2 1/2" Paint warning: These headers are painted with a high heat dull black paint. It will generally dull even more when the engine is started. The header paint will smoke and let off an odor the first few times the engine is up to temperature, and the black finish will become duller, turning closer to gray in color. If exhaust temperatures are extreme at start, the paint will blister and peel. There is no warranty on header paint. Header return policy: Please refer to the header measurement chart below to make sure the header will fit your vehicle and application before ordering. In the event you order a header that will not fit your vehicle and application, you may return them for a refund, providing you do not damage the header. When you receive the header, the finish will be protected and must remain unscratched for a refund. If you bend or dimple any of the tubes or scratch the finish, we will not be able to sell the header and will not be able to process a refund. Use care when trial fitting headers. Repack them well to prevent damage returning them to us. We won’t process refunds for scratched, dimpled, dented, or bent headers. You can view and download the instruction booklet for these headers here.