If you want to convert to a goose-neck and not affect your 5th wheel warranty, I would recommend looking at the Reese Goose Box Gen 2 system. It replaces the factory pin box and will utilize a goose-neck ball in the bed of the truck. The gen 2 has taller wings and give additional height between the trailer and pickup. This hitch has air ride built in that should provide for a smoother experience, see website below;
Lippert, manufacturer of many of the 5th wheel frames, will honor the warranty with the Reese goose box.
This is the approach I will take when I update to a '20 3500 and a new 5th wheel.
Good luck in whatever you decide to use.
DMAX LB7/ZF-6, LS, Onyx Black, CC/LB, 2WD, G80,
VA 0-70-110 Smart E Box, H2 Wheels w/ 315x70-17 BFG T/A-KO, Kennedy 4"-5" Exhaust,
ISSPRO EGT/Boost gauges, Go Rhino WTW Nerf Bars, Line-X, SBC SMF/SD Flywheel, Ceramic/Kevlar Clutch,
TTT Mirrors, BrakeSmart Brake Controller, B&W Turnover Ball & 5th Wheel Companion Hitch
430k miles (as of 5/19)
of the "Brotherhood of Handshakers"
'04 Wildcat 29BHBP
5th Wheel Camper (Sold)