I feel your pain!!! In my case, they swapped the hardware from the sun visors with the wind wings and it took hours to figure that all out. In addition, the holes in my windshield are tapped for a #4 screw, whereas the factory supplied some #6 screws for the purpose of installing the mounting brackets... go to Home Depot and get some screws and cut them to length with a Dremel..

See my blog -- http://factory5roadster.wordpress.co...-front-bumper/

HTH

Jon