reciever hitch options for step bumper

[dsy1]

I have a step bumper with a ball mounted but would rather have a receiver hitch so I can use different size balls and swap them quickly. Does anybody have a square receiver like one of the ones shown below on a step bumper?

I assume the one with the plate attached could be bolted or welded under my existing bumper or the square hitch tube could be welded on top or bottom. Anybody done this?

[BOSNZ]

My 69 K20 has that exact step bumper with the 2" receiver bolted in place. Although I wouldn't tow more than 3500lbs or so with it. I'm actually looking to get a real frame mounted Class IV hitch that fits nicely under the step bumper.

[Mike C]

I had a similar bumper to that on my C2500 '70 GMC Sierra Grande. I bought a Class IV receiver and it bolted on to the truck and worked great. On my current short step I bought a class III frame hitch and it too cleared bumper and worked great. I think the first was a Drawtite and the current a Hidden Hitch?

And after looking at the construction of my dealer installed hitch, I wouldn't want to use it to tow anything of real substance...