I ordered new brackets for my 2013 in January of 2013 from E trailer. There were several different brackets so the are specific to a truck.
Not sure of how a turnover ball works but if it is so a goose neck can be used I would contact the RV manufacturer. Some manufactures don't recommend it and can damage a frame.
I have a Reese and reused the rails and hitch head. As I posted previously, all I needed was the frame to bed brackets.
2013 Crusader 330 MKS
2013 Chevrolet Silverado LT 2500 D/A