Greeting folks, had a question about my new to me 2004 f-150 xlt supercrew 4x4. I've had 2 f150s in the past but this one is by far the nicest. My question concerns the rails on the roof. Now I've already read a fair amount here about them and where to find them but I am mostly interested in what was there. I currently have the sunglasses pocket and behind it I can see an indention in the headliner where something else was. I don't see any power or audio connections so I don't think it was the DVD. What else could have been there? Anyone got any idears?