Exactly right, you can drive a roadworthy, unregistered car to an inspection station for a pink slip check. A booking is a good idea.
Roy, is the car unregistered in the current state? Are you looking to register it now? Is it complied?
Steve-o, you can't use a trade plate to get a car registered. They are only for the use of a licensed motor dealer, which I don't think you or Roy are.