Hi, John with etrailer. If you're looking to convert your 5th wheel travel trailer over to a gooseneck, then take a look at this. This is Gen-Y's Torsion-Flex 5th Wheel Gooseneck Coupler. So how do you know which Gen-Y coupler is gonna be a right fit for your camper You can come to the nose of your pin box. This is actually the one we replaced on our camper here. And the part number for your… see more >