I agree , the vin list that Yenko sent to NHRA may not be reliable as all Yenko 427 Chevelles.
The list of 1967 Yenko Camaros that was sent to NHRA by Yenko has not proved to be a list of 427 Camaros.
Yenko did meet the 50 car minimum at some point during the year but not sure what date the NHRA list was submitted.
The NHRA season began with the Winternationals in February. It may have been hard to prove that 50 COPO 427 Chevelles were built and sold by February.
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