I'm so happy with this product!! Stainless steel and easy install. The most important part is the sound. Very little increase in sound level in the standard exhaust position, but when you put it into sport exhaust you get the raspy sound that you would expect. Not too loud but definitely a...
I've read that some are experiencing wheel hop when drag racing. I haven't had any issues so far.
Yes you have to drill into the spoiler. I have a second track pack spoiler that I acquired. So if I ever sell it, I can put the new one on.
1. I don't think there's an advantage at all.
2. I think they're Niche's. He's got an extra set of carbon wheels if anyone's interested.
3. I have the track pack spoiler with the ZL1 Addons Wicker Bill