There would be no way to know for certain that a car was the last one built for a model year unless Chrysler released its production records. This cuda is almost certainly the latest production one that has been documented at this point.
Someday, possibly, another hemi cuda built after this one, or its broadcast sheet, or dealership sales record, will surface, and this one will lose its distinction!
This one has been at many Mecum auctions, they should have sold it a few years ago before the prices started going down!