In trying to gather info on this car in the thread attached below, I got in touch with Don Branine Jr. and he was kind enough to send along some pics of the Branine race Camaros from back in the day. His understanding from his father is the '69s were COPO cars. But the Guttersnipe race car in the thread here is not one of them.
https://www.yenko.net/forum/showthread.php?t=152550