Aasembled Vehicle / Replica.
https://www.txdmv.gov/motorists/assembled-vehicles
if over 25 yrs, Antique or Classic
It is easy to get Cobras registered and through safety, amd everyone knows what a Cobra is.
Answer all questions with, "Is like a Cobra, its the European Cobra.
Pretend you have a Cobra.
"Cobras were manufactured by Ford", yes, Caterhams were manufactured by Lotus. No difference.
If the proces gets too hairy, grab your stuff and withdraw the application. Find a tax office with someone who knows what they're doing.