Flowtech Long Tube Headers - 1967-69 Camaro/1968-74 Nova/1965-70 GM Full Size - 396/454 - 1-7/8" - 3.5" Collector - Ceramic Coated WM1405250T1500 Even though manifolds are compatible

Even though manifolds are compatible with EGR systems

Crossmember-Back System

TH400 / 4L80E

Do not exceed the manufacturer's gross vehicle weight rating

Sierra 2500 Had

Flowtech Long Tube Headers - 1967-69 Camaro/1968-74 Nova/1965-70 GM Full Size - 396/454 - 1-7/8" - 3.5" Collector - Ceramic Coated WM1405250T1500 Even though manifolds are compatibleFlowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5 16" flanges with sealing rings for a leak free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces underhood temps