The wheels were found to be from different manufacturers when they were stripped. If you look very closely at the arear where the mesh meets the center you can see a slight difference between the top and bottom pairs of wheels. One pair is marked on the back with the Enkei trademark, and one pair is not identified. The only difference between them may actually be in the way the centers were machined.
I may repaint the centers in a Chamois color to match the stock mesh wheels for this model, then add a polished aluminum cap with a Mustang emblem.