Jim, if you're settled on the Scamp and it's just the hitch that you are looking for, you should be aware that the Scamp 19' does not use a pin-and-plate style "fifth wheel" as is normally used on larger RV trailers. It uses a ball
(on the truck) and socket (on the trailer), which is a common setup for "gooseneck" agricultural (e.g. horse carriers) and equipment trailers.
While some ball mounts for pickup beds use the same mounting frame as a fifth-wheel, there are other designs which are designed just to mount the ball - sometimes in a way which is retractable or at least quickly removable.
Another detail to consider is that the Scamp 19'
uses a 2"
ball, not the commonly used 2-5/16" size (or the even higher-capacity 3" ball). That presumably eliminates most choices, even if they could fit into the desired truck.
In recent discussions, at least one member has mentioned their source of a suitable hitch. Scamp themselves sell a hitch, found under "WELDING SHOP (PREFABRICATED ITEMS)" in the parts list available from their Parts and Service