Hi Bob and welcome!
Bill is correct in his statement that each state is different. You should hear from other members from Az to coach you along with the registration process.
Vettes & Cobras?
There are a number of members here with both. I am down to only one, my 76, which I purchased June 15, 1976. I filled the space with my Cobra.
http://www.corvetteforum.net/c3/bud_snyder/
Take care,
Bud