You will find that Washington Law states
"(6) For a manufactured new vehicle kit and a manufactured body kit, the model year of the vehicle is the year reflected on the manufacturer's certificate of origin for that vehicle. If this is not available, the Washington state patrol shall assign a model year at the time of inspection."
Check at
http://apps.leg.wa.gov/RCW/default.aspx?cite=46.16.680
I'm looking at a new Superformance and am about to resign myself to a 2007 title.
Any other suggestions will be helpful.