To find a close estimate, you would likely need to consult specialized resources like:
* Plymouth historical societies or clubs: These groups often compile production data from various sources.
* Automotive historians and researchers: Individuals specializing in Plymouth history may have access to more comprehensive production records.
* Original factory build sheets: If you have the VIN of a particular 1971 Barracuda convertible, a build sheet can provide details specific to that vehicle, but not the overall production number.
Therefore, I cannot give you a precise number. Expect any number found to be an approximation.