I installed the CDC agressive spolier on my car a month ago. Here is some things about it:
1. My car is lowered 1.5" with the Prokit. It will scrap over even small dips. You have to go real slow.
2. I had a hard time with the install. It did not and does not fit perfect. I had to file it alot of things down to get it to fit. I think I just got a bad piece, or unless my 06 had the wrong specs.
3. Since I scrap up my spoiler every other day, I use bumper paint to fix it. Its a perfect match.
4. It does look good and with my car lowered, it really evens out the front nicely. The spoiler is very durable, I have scrapped and banged many things with it and it still holds its shape!