COPO cars were ordered 2 ways.... one was through yenko wich got the iron big block then general motors produced 69 zl1 camaros wich were aluminum 427s so in 1969 there were 270 copo camaros.
A copo 69 camaro is worth between 500k and over a million... dont think the GNXs will ever touch that in my lifetime but a gnx is a solid collector car. Ive seen some sell in the 70k range
69 all aluminum 427's. 900-1000 COPO's all together. Yenko 201-500 depending on the source, counting the kits he shipped to other dealers. Harrell and Baldwin Motion also.
I'll sell my T-Type for $6500. All it needs is the gas gauge fixed and an A/C charge.
I rebuilt motor 3k ago but while it was out I had no need to rebuild trans lord know whats inside of that engine......I say bandaid job oh with a cold air intake