You can either buy a new hitch that plugs directly in the "pucks" or you can buy an adapter that allows you to use you existing hitch.
Is your bed long or short? If you need a slider, your options are limited (Reese only I believe) if you want a hitch that plugs directly into the pucks. With an adapter, you have many options. If you do not need a slider, you have more options for direct puck connection, and of course lots of options for adapter use.
I would analyze trailer height and truck height before deciding on adapter use. I know guts with high trucks (factory) that prevent a level ride when using the adapter. They can't lower the hitch enough and causes the trailer to ride nose-high.
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