Here's a better picture of how I made mine.
It slid right between the frame rails and required 6 holes to be drilled for bolts and a hole cut through the bumper. I used a cut-off saw for that.
Best part (in my opinion) is that it doesn't hang lower than the rear bumper and is boxed in between the frame and bumper in case a weld breaks. Also, it was made with **** I had lying around behind the shed