Hedman Elite Ultra-Duty Headers - 1.625 in Primary - 3 in Collector - Metallic Ceramic - Small Block Chevy - GM Fullsize SUV / Truck 1967-91 69830 - Pair Race Radios & Components 2-1/2 in Inlet to 2

2-1/2 in Inlet to 2 in OD Outlet

Eight ventilation holes for use with Stilo Helmets Top Air systems

Fully rebuildable design and proudly assembled in the USA

all Hawk Performance rotors and pads are subjected to rigorous testing on brake dynamometers designed to accurately simulate real world applications - from professional racetracks with speeds in excess of 200 MPH to off-track street driving applications at speeds below 30 MPH In addition

Measures 5-1/4 x 6-1/2-inches

Hedman Elite Ultra-Duty Headers - 1.625 in Primary - 3 in Collector - Metallic Ceramic - Small Block Chevy - GM Fullsize SUV / Truck 1967-91 69830 - Pair Race Radios & Components 2-1/2 in Inlet to 2Hedman Hedders Elite Headers; 1 5 8" Tube Diameter; 3" Collector; Full Length Design Hedman Hedders Elite Hedders Exhaust Header 69830 Tube Size 1 5 8 in. Collector Size 3 in. Tubular Exhaust Manifold System w o Smog Injection Or Injection Heads Ultra Duty 14 Gauge Primary Tubes Ceramic Metallic Coating Stands Temp. Up To 1400 F Durable 3 8 in. Flanges Prevent Warping And Stands Up Better Against Brutal Punishment Durable And Affordable Hedman Hedders