I guess it depends on the actual size. I have one that is at least double the size of the RW OEM and I just removed the OEM one and installed the bracket for my the new one. Also have one mounted in the Basement, curb side.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top