I went to Alpine licensing in Factoria to register the 40 and they promptly told me I require a state patrol inspection. I'm not sure if this is a King County issue but it seams odd.
Assuming DOL treats your coupe as a kit vehicle the model year is designated by the year it was actually assembled. More info here...
http://www.leg.wa.gov/RCW/index.cfm?...action=section