This is what is stated in the AZ Department of Environmental Quality website for vehicles exempt from emissions inspections:
Exempted Vehicles
- Model year 2004 or newer, except reconstructed, vehicles
- Model year 2006 or newer original equipment alternative fuel vehicles
- Model year 1966 and older vehicles
- Vehicles designated as "collectible" (requires collectible vehicle insurance, reported to Arizona Motor Vehicle Division by insurer)
- Electric powered, golf carts or vehicles with engine displacement of less than 90cc
- Motorcycles registered in the Tucson metropolitan area
- Apportioned vehicles (licensed in more than one state)
- Vehicles leased to a person residing outside the emission control areas
- Vehicles transferred between dealers (wholesale)
So is that all there is to it, just get collector's car insurance and you don't have to get your ZR-1 tested?