There is a fairly simple mod' / grade that can be done to turn the reverse lights into extra [high level] indicators and the fog lights into extra tail and brake lamps. You then turn the lower indicator lenses into reverse lamps. Of course you need the amber /clear lenses to achieve that.
Personally I duplicated the lower lights in the bumper to the upper position and added a pair of super duper cree LEDs in my upper light pods as my reversing lamps.