I think the Carbon Fiber Guage Hats are a great interior mod. Really add to the interor and the reflection is not bad at all, I grew to like it.
I actually got mine from
Carbon Signal and the fit was perfect! I didn't even have to really tape them on although they suggest it.
I also got their shifter surround in CF, that is a great addition also but I find it looks better for manuals as the one for auto's is kind of bulky but hey, still looks good. This is mine.
I also suggest Carbon Fiber Element for the window switch panels, I think the wrapped version might be slightly nicer than the overlay