you can buy a bumper like this
http://www.vegasdezertfab.com/c/prer...unner-bumpers/ but if you have the tools and material it would be much cheaper to build your own, to your own specifications.
as far as the light placement goes, if you decide to get a roll bar mount some spot or pencil beams up there. other kinds of lights may reflect of the car and not be as effective. Then, money permitting, a light bar with a fog or more of a spread beam on the bumper. That's kinda what i have now, and it works great for me.