Date Added: Wednesday 03 May, 2017
Fitted one of these to my 2012 NC. It took about 30 minutes and was very straightforward. I painted the lower metal brackets black so that they would better match the rest of the interior trim.
It does reduce wind "swirl" inside the car, and although the effect is subtle it's noticable. The benefit is greatest at higher speeds (abround 60mph and abpve), where the buffet and wind noise is much reduced.
The only negative is that I can no longer raise and lower the roof from the driver's seat
Rating: [5 of 5 Stars!]