The last pic is of my new MAC UD pullies matched up to the old. The person i bought the car from said it had the crank and water pump pully but when the alternator was replaced a stock one was put back on. I knew this was incorrect cause the alt needle bounces around like they always do after ya put UD pullies on. I matched the old vs new and they must be MAC pullies as well cause the diameter is the same. However, on the alt pully the outside diameter of the pullies is the same but the ribs on the other are just a bit taller. Anyone want these pullies for $20?