I have 6 rotor oil pumps for sale,they are used and more than likely will need rebuilt.I checked Macs and the repair kit is $35.00 I am asking $40.00 each plus shipping cost from Ohio     Carl   The pumps are all aluminum housings  the part numbers are  CIAE  6604-A-I  one pump-  ECG 6604 A -  two pumps , ECG 6604-B -two pumps, B9AE 6604 E-I  one pump