You're going to like the results. I will definitely give the impression that you lowered the vehicle.
As others have said, there are 4 Torx bolts to remove the rails. The SRT rails will disappoint you when you see them knowing you spent $100 on them, but they will give you that nice clean look. They have a strip of double-sided tape that runs between the bolts to secure them to the roof. I think I did put a bead of silicone in the holes before reinstalling the bolts. I painted mine to match my Jeep (I know, my Jeep is black, but my SRT rails are BRILLIANT black
). I've been happy with this mod.