Have no idea why he left stock bumper on if that is real. I mounted a TJ bumper and mounted a 12500lbs winch to front of mine by using the D-ring thread for inspiration.
http://www.jeepkj.com/forum/f293/how-install-front-d-rings-25615/index6.html I bolted nothing,just stick welded 2in.x1/4 square tube into the pockets then added winch plate and TJ bumper. If one took time to follow the threads instructions for D-ring mounts it could be done very cleanly. I just needed it to hold winch and me on the end of a line.
Prior to mounting winch
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After winch mount/before Custom Splice syn.line
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Point being most any bumper can be attached.