Paul, is it possible that Ford created a new undertray for the 2014, and the air dams have attachment points in that new undertray? If I'm correctly envisioning what you've been describing about the air dam mounting points (and no visible corresponding place on your car), perhaps a revised 2014 undertray might explain it?
62Lincoln you are right they look different but FORD has the same part#s in their catalog. I'm thinking of mounting with the three holes and cutting off the three clips. Or I could drill and cut slots for the clips to go in.