DESCRIPTION --Black smooth street hood scoop for single or dual quad carbs reversible flaps. --Material: Aluminum --Fits most 4 BBL carburetors with a 5 1/8" neck. --Adjustable center line on dual quad (7 3/4" to 9 1/4"). --Measurements: The length: 19 3/4" The front: 12 1/2" wide x 4 1/4" tall The back: 7 1/2" wide x 4" Tall --Comes with three "round" inlet butterflies (20" long) and two air cleaners (6 3/8" x 2 1/2" paper element). --Adapter plates included for either dual or single application. --Includes filter, screen, adjustable base, and mounting hardware. --NOT include the linkage rod (from the butterfly lever to the carb's throttle). --Package: Including all items in the pictures. Note: Professional Installation Is Highly Recomme.