Did you have to do any sort of modification for the RokBlokz?
I know for the non-RS 12-16, you had to drill another hole for them to fit properly.
Surprisingly, none. It was really easy. I was a little skeptical of the rears (at least I think it was the rears) because they only had two mounting holes instead of three. But it snugged up just fine. About 3000 miles now and no problems.