If you mean can I place the U-bolt around the hitch (the square tube that is part of the truck) such as below
No I'm afraid not its larger than the receiver, has to be since the receiver slides into it.
Or am I miss understanding what you mean?
This picture shows how it "should" work.
The green arrow points to the metal plate that the U-bolt bolts through. The red arrow points to the U-bolt with threads pointing down. The red arrow also shows where the upper lip on that receiver is that prevents the U-bolt from fitting.
I've been thinking about it for a while and short of cutting grinding part of that down, which would be a bad idea I think and weaken it, not sure what else I can do.
I dont think I can redrill the receiver where the pin fits so it sticks out farther as it would over lap the current whole and instead of a whole it would be a big long oval.
But I'm open to ideas other than my only other thought of buying a new one and trying again ....