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These Doug Thorley Long Tube Tri-Y Header kits make huge increases in power output of your truck/car. Like all other Doug thorley header products, these Long Tube Tri-Y headers are built using industry leading 14-gauge tubing with 3/8" thick flanges for maximum durability. These kits comes with complete performance pipes and/or adapters. Install these long tube headers today and feel your vehicle's true power potential! Doug Thorley Long Tube Tri-Y Headers for Chevy/GMC, Dodge, Ford, Hummer, Jeep, Nissan, and Toyota are proudly made in the USA and backed by lifetime warranty.