How to read these numbers. "Official" means figures from the manufacturer's own year-end statistics, as distributed by the National Corvette Museum or GM Archives. "Catalog-derived" means a third party counted VIN ranges in the factory parts catalog. "Community" means enthusiasts compiled it from VINs or window stickers, so it may be incomplete. None of these sites are affiliated with SpecCount or the manufacturers, and brand names are used here only to identify the cars.
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