Tom:
A Thread from the Registration Forum regarding NJ registration:
NJ registration
In addition to the above, the Registration Forum which might have additional Threads
http://www.clubcobra.com/forums/registration-forum/
Another possibility is to search the NJ DMV web site for kit cars, replicas, assembled cars etc. Possible, any emission requirements/testing may be on another NJ web site. Might need to still validate with the NJ DMV in case any regulations have changed since the dates of the Threads/Posting on Club Cobra.