I have recently gone-through and learned-about NC registrations (of my 1954 trucks).
DMV would not register them without me getting a bonded title.
Without going into unnecessary detail, here are some questions.
1. What year truck are you registering in NC?
2. In what state was the truck last registered?
3. What type of "former/present" registration/title/bill-of-sale do you have?
Do you have a stamped-into-the frame truck ID/serial number?