You will find several threads on this forum arguing the subject of long vs. short bed trucks. I have a short bed Dodge 3500 and tow a 5th wheel without issue. I have an older (ancient by many standards) 5er that has a flat front cap. I also have the Pullrite Superglide hitch that takes all the worry out of towing with a short bed truck. Unless they can prove to you that that the Fox will clear your short bed truck cab on sharp turns, I would strongly suggest including a superglide in your plans.
2020 Chevy Silverado 3500HD Duramax 4x4 Crew Cab Standard box
2011 Arctic Fox 27.5L