Sending both heads to Dover in Chattanooga, Tn. tommorrow morning.
Is this for a crack repair quote or confirmation and can you share if the extra coolant holes were present?
You might be suprised what might turn up by placing a local classified ad especially online(Kijiji for example)for pre 1963 Chevrolet inline heads. Some rodders may encourage you to get the whole boat anchor out of thier way.