Join Date: Sep 2016
Location: Outside of Edmonton, Alberta
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So there are a few options.
If you want a traditional fifth wheel plate, there are several manufactures that make them, but only a couple that have the slides to bolt down the mechanism. Curt is one. Downsides is the hitch plates are heavy, often taking some time to install, and a couple people to lift and remove. Generally they live in the bed boxes, occupying space, even when not in use.
Another is to replace the entire fifth wheel pin box on the trailer with a reese goosebox. This will enable you to use your factory gooseneck hitch; all you need is a ball for the truck. The goosebox is nice as it is endorsed by major manufacturer Lippert, who makes a good majority of trailer frames. It is a heavy unit though, but includes an airbag to adjust the ride. Expensive as well.
By far the most popular option if seen here, and use myself, is the Anderson ultimate connection. Its a frame that uses your existing factory gooseneck hitch ball, bolts to the ball itself, and spreads the weight over a large surface area in the box. It includes a kingpin adapter, and is also greaseless. Can be installed and removed in less than 2 minutes. Not endorsed for warranty by anyone, but Anderson has something like a million dollar warranty if it every caused any damage. In all my research, Ive never seen a single case, because it uses the fifth wheel original equipment, and the loads transferred to the trailer are still the same as any plate style hitch. The big bonus to this hitch, is the ability to remove it in 2 minutes, with one person, weighing at less than 50lbs.
There are some using random adapters from farm stores, but again, are hard to line up when backing up, and put stress on the trailer frame due to their design. The Anderson hitch however does not.
Hope that helps.