Upgrade your existing Big Block Chevrolet Oval Port intake manifold to the powerful RPM Air Gap. This kit, 7561-KIT includes a PN 7156 intake manifold, a PN 7280 intake gasket set, a PN 8559 Intake bolt set, a PN 3899 pair of carb gaskets and a PN 1077 tube of silicone. The commonly needed installation items, all in one box, saving you time and money.