Engine:352 to 428 FE. Bolt Finish:Black Oxide. Bolt Material:8740 Chromoly. Bolt Head Style:Hex. Can be ordered with hex or 12-point heads. Quantity:Sold As Kit. Kit includes bolts for intake manifold, valve covers, thermostat housing, alternator brackets, distributor bracket, motor mounts, oil pan, coil bracket, front cover, headers, water pump, and fuel pump.