My 71 is a base engine, automatic with air conditioning. I recently replaced my Radiator and my Radiator support to hood Air Dam seal. My new air dam seal from Dr. Rebuild does not have the two holes for the two metal push in tabs. The new seals for the vertical part of the fan shroud support did. I see that some 71 cars have the pins in the Air Dam seal while others do not. Can anyone shed some light on which application is correct? That is should the Air Dam seal for a base engine car with automatic/air have the two top pins or not? Thank you