I've got some small amber fog lights mounted on top of my bumper right now(just drilled and bolted on). I'm thinking about replacing them with some better lights, but I think I will keep things "square up there", Not sure what round lights will look like with my "square" headlights. Anyway, it's pretty simple to mount them on top of the bumper by drilling some holes. The only thing is positioning them so they're not in the way of the turn signal/parking lamps.
95, 4" susp. lift, 33x12.50 ProComp M/T's, custom square tube bumpers, , energy bushings, 4.0 HO, everything stock, 1" or 2" body lift and who knows what else coming soon.