That is a great Yenko article for a number of reasons.
one is , it shows a hard to find original engine photo showing no decal on the air filter lid.
This has been debated whether the COPO 427 cars had a 427 decal on the lid or did Yenko add a 427 decal to the air filter lid on some of the Yenko 427 cars.
not many original engine photos have been found to help make a correct lid restoration
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