The best option is to use the Reese Goose Box # RP94716-61301 as this is currently the only replacement pin box approved by Lippert to not void the frame warranty on your 5th wheel camper. Do understand that this pin box does have a maximum trailer capacity of 16,000lbs so it will only slightly reduce your maximum loaded capacity.
You will need the Safety Chain Kit # RP49151 since you are switching to a ball connection and all ball connections require safety chains by law. view full answer...