Hi i wonder if it shall be 3 blades or 5 blades pump on a 401 Engine with ACthe car is a 1959 Electra Two-Door HardtopI,m so confused some say that shall be 5 blaes and some say that is same on 1959-1960 with AC or no ACon the Engine today it's a 3 blades ,i searsh for a water pump who fit to this car with AC,maby some one know where i can find one,hope some one can help me outh with this problem