Take a look at my 2008, I installed a rack behind the cab to hold antennas, work lights, and an amber lightbar. I didn't want to drill the roof either. If I had a building with a tall enough door, it would not have bothered me, but I either have to remove the loaded antennas or run the unity gain short ones to fit in the garage. I figured the constant removing/installing would eventually loosen the NMO mounts in the roof causing problems later, as usually in time the threads get corroded and they don't come apart in the right spot anyways. Plus if I forgot to remove them as thin as the roof is, it would probably tear through. These mounts on the rack are encapsulated and bolted to the top, so there's no worries with them. The rack itself mounts in the stake pocket holes, and it's grounded to the frame. It was bought from Summit Racing equipment and was designed to hold off-road lights...works well for my purpose, and looks alittle classier than a basic headache rack.