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					Originally Posted by William  The "approximately 700 total vehicles" was an estimate made during July, 1969. 
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 If you read the 1969 COPO letters from Chevy they do not say the  700 number as just an estimate. They are very detailed letters  and looks like a lot of effort went into writing them.
The letter states  the 700 number is from  “ a complete review of the high performance vehicle area orders to date “. 
They counted the actual orders for  COPO 427s. 
They  had access to the Tonawanda  L72 engine production numbers , why didn’t they use them?
We know more were ordered and built after 7-9-1969 but how many?