I've just installed one on my track car and I'm happy with the quality. I went for this given the factory most likely knew what they were doing when they designed it. The only thing that was disappointing was the gap between the wing element and the side mounts. I sourced some black engineering plastic and made two "fillers" that enhance the overall look and will also make the unit stronger. I can send you some photo's when I get back from holidays if you are interested.