Doug's Full Length Headers - 1-7/8 in Primary - 3 in Collector - Silver Ceramic - GM LS-Series - GM F-Body 1970-74 (Pair) GBDL3 High Strength Aluminum Alloy ComponentsVehicle

High Strength Aluminum Alloy ComponentsVehicle Applications: 2007-2013 Silverado & Sierra 1500

Promotes increased flow for improved performance

2017-2018 Thomas Transit Liner

That's over 30% more flow

Doug's Full Length Headers - 1-7/8 in Primary - 3 in Collector - Silver Ceramic - GM LS-Series - GM F-Body 1970-74 (Pair) GBDL3 High Strength Aluminum Alloy ComponentsVehicleProduct Description: Headers Full Length 1. 875 in Primary 3 in Collector Steel Silver Ceramic GM LS Series GM F Body 1970 74 Pair Dougs Headers, the most respected name in the header industry since the 60s, began in 1958 as a small muffler shop in East Los Angeles, California. Every Dougs header comes with all the necessary mounting hardware, collector reducers or connector pipes, premium gaskets and detailed installation instruction sheets. Our