Thanks! I thought about that but I didn't want to drill through my roof, I wanted to make them easily removable if I ever wanted to get rid of them, the rack or the whole truck at some point and not leave any holes. I saw the same thread with the spoiler setup and I think someone even did the roof rail drilling on here too. If they hadn't fit the way they did I would have ended up drilling but it worked out nice this way for me. No leaks either. Also I'm not sure how much space the sunroof stuff takes up under the headliner and the edges of it are pretty close to the roof rails.