well depending on what title you have you can swap vins.... or register it as the extra cab if you have a title anything really they won't know and don't a bunch of my buddies swapp cabs and just rock old vins because thats thhe frame vin and its easier also making insurance for them cheaper.
but a lot of times theres extra plugs there for like factory ac and factory sr5 stuff I would imagine because every toyota i work on has extra plugs somewhere.
