1964 1965 Chevy 327 L79 Original Aluminum Intake Manifold..this can be used early Small Block Chevrolet engines..the thermostat housing and carburetor threads have been helicolied..please look at pictures..the helicoils work fine.. a plug has been insert on  the oil fill hole...a 1 inch plug can be inserted on the heater outlet or a 1 inch heater tube can be inserted..please look at the last picture... I did not try to remove the plug on the oil fill hole and the other plug in front..can possibly can be removed but i dont want to mess with them..selling as is on the pictures..overall an original hard to find 327 L79 aluminum intake manifold..this intake was on Corvettes and other High Performance Chevrolet cars..