Nice buggy. You would need to title it as a kit vehicle.
According to the Division of Motor Vehicles in North Carolina, a custom-built vehicle is one that is "completely reconstructed or assembled from new or used parts." Glider kits and custom-assembled vehicles also fall under the category of "custom built." Such a vehicle must be registered.
You should list the make as "custom built" and the year the vehicle was built should be listed under "year." When you register a custom-built vehicle, the title is branded "reconstructed."
Registering and titling a custom-built vehicle is not much different from titling any other motor vehicle. Registration and titling requires a visit to a vehicle and license plate renewal office and the following:
An application for title, completed and signed in front of a notary.
An affidavit for custom-built vehicle, Form MVR-55, which is a notarized statement that describes the vehicle's assembly from new and used parts.
An inspector's report, as this special type of vehicle must be inspected for safety and drivability.
An odometer reading.
A certificate of title or Manufacturer's Certificate of Origin for the frame, engine, and transmission (or an indemnity bond can be filed).
A title fee of $40.
A Highway Use Tax of 3% of the value. The car's value is determined by the total of bills of sale for the entire purchase of new and used parts and labor.
I've got a Viper 250 that I'm working on titling as a custom built rig. In AZ and NV buggies like mine are sold as street legal.