Quote:
Nickey/yenkos/baldwins are not copos. These dealers would order camaros and place their own 427's in them.
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?? Chevy agreed to supply factory equipped 427 Camaros to Yenko in 1968 on the condition that he keep it a secret. Don Yenko agreed, and (until recently it was thought that all 68 of the 1968 Yenko Camaros had dealer installed engines), just like the 67's, but they were actually" factory installed". At the end of the 68 model year the cars had proved to be both reliable and desireable. This led to the birth of two special options for 1969, COPO 9561 and COPO 9737.
http://www.holisticpage.com/camaro/camaros/copo.htm