Sorry about no shooting any pictures. By the time I got home it was too dark.
The bumper is a boxed powder coated steel with internal storage for the dump hoses. Didn't look like there is much in the way if extra bracing. But there are welded nuts internally to accept the fox landing. There are about 12 capped threaded inserts used for the fox landing. I'm guessing it might be easier to purchase a new bumper then trying to cut open and retrofit the existing. Unless you have the equipment and tooling to do it yourself.
I'll try to take some pic's tomorrow.
2012 AF 992S
2002 F350 w/7.3 SRW CC with Banks goodies, Firestone Airbags and Torklift Fast Guns, Super Hitch w/48" truss ext.