I am not sure if qualifies as 1 of 1, but the Tin Soldier COPO has two items of interest.

One, it is the only known COPO that the original owner, Mr. Ron, actually worked on the assembly line at the factory. Mr. Ron worked at the Norwood plant building Camaros.
When he saw 427's going into some, he asked and was told about the COPO program. As a privateer, he wanted one immediately and went down to Queen City Chevrolet and ordered one.

Secondly, he said that on his vette, he was tired of going into the cockpit to look at temp while tuning, so he was somehow at the GM Locomotive division for something, and he swiped a GM Locomotive temp gauge and it "fell" onto the COPO as his story goes. It is still on the car today (moved to a new manifold that some point).

https://i.imgur.com/5w3OIUq.jpg

https://i.imgur.com/8EbVYZn.png

https://i.imgur.com/NaXU1IX.jpg

More of an interesting tidbit than anything I guess, but pretty cool none the less.

/R

Kevin's '73 Nickey Nova is in the book. On an interesting note, I found a classified ad for the car and was able to put Kevin in touch with the original owner.