Ford 351 Cleveland 4bbl Carbie Remflex Exhaust Manifold Gaskets REM3007Ford 351 Cleveland 4bbl Carbie Remflex Exhaust Manifold Gaskets REM3007 Ford 351 Cleveland 4bbl Carbie Remflex Exhaust Manifold Gaskets 1 15 16 inch width x 2 5 32" Square Port; Ford V8 351 ('70 '74) Cleveland 4bbl Carb. (Includes Boss, High Output and Cobra Jet) Square Port, 2 Set Manifold or header applications Heating and cooling of the exhaust system causes header and manifold flanges to warp resulting in gaps between the head and header which