Here are pics I took of the bumper when I first dragged this beast home, before I even got it off the trailer.
There are brackets bolted to the front axle. The bumper is attached to these brackets with pins. You can pull either pin to swing the bumper away from the grille before opening the hood.
With the bumper out of the way, the hood can be tilted forward for access to the toolbox, gas tank, etc.
If you pull both pins, you can remove the bumper altogether.
As I said, this is the main reason I bought this derelict. A few months ago I was at an estate auction and spied another swing away bumper on the ground. It got packaged with a Ford bumper and I bought them both. The second one (blue one on the right) is very similar to the first one, in fact they appear to have been made by the same person or company, but the style is a little different. The brackets, front loop and style of construction are identical.
After careful consideration I finally decided to keep the first one and sell the second one. A deal has already been made. I just need to figure out the best way to ship it to the buyer.