The Edelbrock Square-bore Carb to Spread-bore Manifold Adapter #2696 is designed to allow installation of the Edelbrock Performer Series carburetor on vehicles with the OEM (original equipment) spread-bore intake manifold (typically GM vehicles that were originally equipped with the Rochester Quadrajet carburetor). This kit will also work on Chrysler manifolds designed for the Thermo-Quad carburetor. It contains the necessary items to adapt the EPS carb to the OEM manifold. #2696 is emissions legal when used with carburetor #1400 on a 1980 and older non-feedback GM vehicles powered by a V8 gasoline engine.