Since you're using a sliding hitch I'm assuming your 2017 Chevy Silverado 2500 is a 6-3/4' bed so the only option you'll have is replace the pin box of your 2017 Highland Ridge Open Range Roamer 337RLS with a rotating pin box and swapping the Demco Hijacker Autoslide 5th wheel hitch # DM8550034 with a standard fifth wheel hitch that will be a little lighter.
The Reese M5 5th Wheel Trailer Hitch for Chevy/GMC Towing Prep Package - Single Jaw - 20,000lbs # RP30890 weighs approximately 150lbs... view full answer...