I have a brand new Curt X5 Gooseneck to 5th wheel adapter plate, model #16310 for sale. If you have a gooseneck hitch with the hideaway ball that drops below the deck, and pins underneath truck, this adapter simply fits where your ball goes, and uses the same pinning arrangement that your gooseneck ball uses to stay in place. Rails on this are universal, so will fit any 5th wheel style hitch, just like using the rails you would mount in your pickup bed. Rated for 20,000 lbs. Square shank fits any square ball hole on gooseneck hitch. Only bad thing I have heard about these is if you have spray in bedliner or plastic bedliner , it may have to be trimmed out or I have seen a couple people say they just pounded it down till it fit. Shank must fit down far enough for pin to engage it under truck. Located in Alpena, May be able to deliver depending on direction. Here is link to adapter . I am asking $300 or best offer.