Looks like a custom Bubba-job to me. You won't find my bumper on another Jeep either since it's custom.
The only things I can think of that "R" stands for is Rugged Ridge and Rough Country.
Personally I would ditch your front bumper and go with something more like mine which is 3/8" thick 6"x4" structural steel beam. Also what is the point of the vertical rods on the ends of the bumper? As for the rear I wouldn't go towing anything with that hitch or using it with a recover hook unless the bumper was tied into the frame, you'll mess up your rear frame horizontal support and possibly twist the frame.
Also you might want to get 2 tow hooks to mount on the front bumper through the bolts that tie into the frame.
PS- congrats on your YJ purchase.