Gator- I'd sell my soul for you to hit me up with some details on how you did this. I've been fighting for weeks with the same issue you had. I NEED this...
I just took off the bumper, marked the center and top, took it to a trailer hitch shop, asked if they could cut a square hole in the bumper on both sides and weld in a 2" receiver, and showed them a few pics of a mopar hitch and a few pics I took at the dealership. They said no problem, an hours work.
No magic, just action.
The only thing I have different from the factory is the rear end ratio, which I am not to concerned about. I mostly use it for a bike rack or light trailer.