Get Your Chevys and GM Trucks Racing Ready! This Edelbrock Carburetor Adapter is just what your ride needs for smoother autocross and road course racing. Built to last from sturdy aluminum, this adapter is 0.563 inches thick and features a 4-hole design. It bolts right onto your square bore carburetor, converting it to a spread bore. No more fuss; it comes complete with gaskets and hardware to make installation a breeze. Product Highlights Thickness: 0.563 inches Material: Durable Aluminum Includes: Gaskets & Hardware With the rugged charm of Edelbrock's design, this adapter isn’t just functional—it adds a sleek look under the hood. Perfect for those looking to upgrade their GM vehicles for better performance on the track. Get ready to impress with improved throttle response and power delivery. Now, that’s what we call racing ready!