I have a 2 1/2" receiver on my 2015 F350. You can get an adapter sleeve that will reduce to use the 2" hitch. You can find them on line, at Tractor Supply, or possibly at the home improvement stores, or any hitch dealers. Just remember, you are still limited to the weight limits of the 2" receiver.
Charlie & Lizzie the Mini Dachshunds
2008 Jayco Eagle Super Lite 30.5 RLS
2015 F350 Lariet Crew Cab Long Bed 6.7 Diesel B&W Companion Hitch
24 hours in a day, 24 beers in a case. Coincidence? I think not.