I've never heard any such statements. I've seen no evidence that Z10's were ordered as a fleet, esp since they went to lots of dealers, not just one.
I can't think of any other regional products. Certain dealers ordered Carolina Blue, Colorado Blue, and CA orange cars, but they were just ordered via the normal process.
Did you read my article? Production was 400-500. No, no stat sheet.
Donna = D. Crispino. Her book was "The Official Chevrolet Indy Pace Car Book from 1948 to 1990". What page mentions the blue stripes?