Here is a picture of a Bene Vento bolt on sun roof wind deflector I installed. It went on very easy and will only work with factory installed sun roof's because the Stainless steel clips hook to the lip were the factory bent the metal down when they made the hole for the sun roof.
I would be interested to hear if it cut back on wind noise as well. I have a black traverse so you wouldnt really even notice it on mine (which is what I would want). Please post back once it gets warmer and you can use your sunroof. Thanks!