1) Compatible With Chevy 1955 And Up Small Block Engines Including 265, 283, 305, 327, 350, 383, And 400 V8 Engines.

Do Not Fit The Models Listed Below:

Not Fit Chevrolet Nova 1971

Not Fit Chevrolet Caprice 1972

Not Fit Chevrolet Caprice Classic Sedan 4-Door 5.0L 1983

Not Fit Buick Regal 1984

Not Fit Chevrolet Caprice 5.7L 1986

Not Fit Chevrolet Caprice 1987

Not Fit Chevrolet Corvette 1978

Not Fit Chevrolet Nova Base 5.7L 350 1973

2) They Are Expertly Crafted To Enhance Performance In 5.0L (305ci), 5.3L (327ci), 5.7L (350ci), And 6.6L (400ci) Engines

3) Engineered For A Perfect Fit With Straight Plug Cylinder Heads, These Headers Employ A Hugger Design To Mitigate Clearance Issues.

4) These Shorty Exhaust Headers Are Constructed Of High-Strength Steel And Feature A Nice Black-Coated Finish.

5) Each Flange Is Precision TIG Welded Using CNC Machinery For Unmatched Strength And Durability.

6) The Headers Offer A Direct Bolt-On Design With A Three-Bolt Mounting Style For A Hassle-Free Setup.

7) Head Flange Thickness: 3/8"

8) Pipe Thickness: 16 Gauge

9) Inlet Diameter: 1 1/2"

10) Outlet Diameter: 2 1/2"

11) Package Includes: As Shown In Our Pictures.

This Item Doesn't Come With Installation Guides. We Highly Recommend Professional Installation.

We Will Ship Your Package From Different Warehouses.