There is special acknowledgment for Thunderbirds outside of Canada and the United States.
If you are unsure just use "New".

Certain Thunderbird models cannot easily be identified from a VIN or body style alone. Do you want to see a list which will help to identify some uncommon Thunderbirds?

Your help in this department is greatly appreciated by all who visit the Registry.

Allowed: jpg, jpeg, png, pdf - Max 3MB each
No text files, no gif, Max 3MB

You will see a confirmation screen and receive a confirmation email from More information about your registration will be included there, including instructions on how to send more pictures.