Intake Manifold Install Kit1955-1985 Small Block ChevyIncludes:Intake Manifold Gasket SetWater NeckHeater Hose FittingPipe PlugsDistributor Hold DownReturn Spring BracketHardware Note: The Intake gaskets in this kit do not have the heat riser port provision. These are recommended for Intakes that do not have a heat riser crossover.Intake Manifold Install Kit Includes:(2) Intake Manifold Gaskets(2) Intake Manifold End Seals(12) Intake Manifold Bolts: 3/8 in.-16 x 1 in. L with 12-Point 7/16 head(1) Distributor Gasket(1) Chrome Distributor Hold Down with 3/8 in.-16 x 1 in. L Bolt with 9/16 in. Hex Head(2) 1/8 in. NPT Pipe Plugs(2) 1/4 in. NPT Pipe Plugs(2) 3/8 in. NPT Pipe Plugs(2) 1/2 in. NPT Pipe Plugs(1) Chrome Thermostat Housing with O-ring Seal and 2 Attaching Bolts(1) Heater Hose Fitting: 1/2 in. NPT x 1.750 L x 5/8 in. I.D. (1) Chrome Throttle Spring Bracket(1) Carburetor Stud Kit:(4) Studs: 5/16 in.-18 Bottom Thread x 5/16 in.-24 Top Thread x 2 in. Long(4) 5/16 in.-24 Nuts(4) 5/16 in. Flat Washers