Well after months of cruising the interwebs and a little luck I was able to score some 1971 Vette Derby caps for my Rally wheels on the Nova.
These are absolutely perfect and have the crossed flags and not to mention these are not plastic reproductions but original.

Bonus four trim rings for the 15 x 8 wheels and two 15 x 7 rallies in the super good deal.
I even picked these up close to home!!!