I used to have an '83 chevy with the chrome drip rails that you could attach a light bar to without any drilling. Now I have an '02 Chevy Duramax and with redesign, there are no drip rails anymore above the windows. I don't want to mount infront of the grill, and prefer across the roof. Anyone using a rack that will hold 4 or 5 offroad lights they are happy with that required minimal drilling. I'm guessing I may end up having to drill. Someone mentioned a brand called yakima, but I haven't found an application by them that will work.