I suggest getting the TrailAir Tri-Glide pin on your 320. I have it & love it over a standard pin. I already had a Curt slider so I kept it. I have a short bed but have not needed the slider, yet. If I were buying a new hitch I would look at one that also had a cushioning system. I added firestone air bags to my TV just for leveling purposes.
Wayne & Sheryl
Plus Ollie & Sophie
(they don't know they're dogs)
2011 Ram Laramie 2500 CC 4X4 6.7 Cummins
2015 Columbus 320RS
"Where ever you go, there you are" Buckaroo Banzai