Here's my bumper explanation from another thread. Let me know if any of the links don't work for you.
Originally Posted by MTH
I get quite a few questions about this set up. It's this Rugged Ridge light bar. I cut the light brackets off with a sawzall and used an angle grinder to smooth out the cuts. Then I bedlined over the exposed metal with spray-on Rustoleum bedliner. Install wasn't bad, though your fingers need to get to some narrow spots.
I will say that the steel on the light brackets is no joke. I mounted the light bar first and then used a sawzall, and the sawing definitely worked the mounting hardward pretty hard (though it's still rock solid). If I had it to do again, I'd consider cutting the tabs before mounting if you've got a bench mounted vice.