Aluminum Carburetor Adapter Plate 3/4" Square Bore to Spread Bore Intake Manifold Description: Upgrade your engine's performance with this premium aluminum carburetor adapter plate. Specifically designed to adapt square bore carburetors to spread bore Quadra-jet 4-barrel intake manifolds, this 3/4-inch thick adapter features an open center design that enhances air and fuel distribution for optimal combustion efficiency. Crafted from high-quality die-cast aluminum with a precision sand blast finish, this complete kit includes all necessary installation components for a seamless setup. Key Features: Universal Compatibility: Enables square bore carburetors to fit spread bore intake manifolds .