Ram 5500 with Flatbed and Torklift Super Hitch question

I'm going to go out on a limb here, and roll my eyes at your "upfitter".
They won't install the hitch because they can't figure our a work around.? Offense intended, that's the job of an "upfitter", to make it all work.

Installing a flatbed is not rocket science and doesn't fall under the heading of engineering genius needed.

As Bedlam noted, very common for some fab work needed to get a Superhitch installed. Trading or sharing a bolt hole just isn't a game stopper.

I'd find another fab shop.