Looks like someone has done it:
http://swiftsurprises.me/i/2017/05/a..._a-728x546.jpg
Measuring from the top of the bed to where it hooks up is 4.25 inches. It just might make it.
I have a dually on order but will take 8 weeks from Dodge, good thing, I have to sell my current truck they wanted to give me 10k below Kelly blue book trade in so I said no. They didn't have one long bed dually, just a bunch with the 6 4' bed with and mega cab. Not pulling with a short bed no more, the SuperGlide hitch was no fun to keep up. Broke and had to weld it a couple times.
My current truck has just over 6k which is good for a 2 year old deisel truck.
Currently my set up is a 2016 2500 Dodge Ram Diesel single axle and I pull a 221rbsl Kodiak. I have had no problems loading unloading the atvs on the Diamond Back.
Reason for the Dually is we wanted a Toy Hauler that doubles as a place in South during the winters.
Just joined so don't have a signature yet.