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Someone on the Chevelle site said there were 18 L-89 cars built in 1970 but there is no breakdown as to how many were convertibles. Not sure where he came up with that figure.
James
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That somebody is Chuck Hanson

...President of the American Chevelle Enthusiast Society and a very knowledgeable Chevelle person.
It's the age old question does a Car that
used to be something rare because of it's engine still hold High Dollar value without that thing that made it rare.. The Original Engine??? Then add poor documentation to the mix and you decide