[Excaliber]

Randy, where did you get the idea that California has to accept an Illinois title for a 1965 Cobra?

I don't see anything in the SEMA list that supports that idea. You can also title your replica Cobra as a 1965 in Oregon or Hawaii and many other states. So what???? California is under no obligation to accept such a title at face value.

Illinois possible registration qualifiers, from the SEMA web site.
Street rod, Specially constructed vehicle, Custom vehicle, Materially altered vehicle, modified vehicle, antique vehicle.