Spectre's Air Intake Kits are available for a number of applications and are designed to fit your classic muscle car. Manufactured from high quality polished aluminum, the cast aluminum plenum fits carburetors and TBI throttle bodies with a 5-1/8 inch inlet. The plenum is 3.5 inches tall and attaches to dual 4 inch outside diameter aluminum air intake tubes that have a 45 degree bend. Always check for proper clearance between the neck of the carburetor/TBI and the bottom of the hood before closing the hood. Air filters are not included in this kit allowing you to add any clamp-on air filter that will fit onto a 4 inch outside diameter air intake tube. 4 worm gear clamps and two couplers are included. Spectre s Air Intake Kits are available for a number of applications and are designed to fit your classic muscle car. Made from high quality polished aluminum; the plenum fits carburetors and TBI throttle bodies with a 5-1/8 inch inlet.