Schoenfeld GM Truck Pull Headers offer bolt-on power at a budget cost. Each high-quality, black painted finish header comes complete with gaskets and bolts, and is available with or without evac tubes, and and either tri-y or merge collectors. Truck Pull Headers come in configurations for spread port, 604 crate engines, 18° heads, Stahl flanges, and LS engines. NOTE: For Off-Road Use Only