well that's a sure thing given that the NHTSA first created recalls in 1966. prior to that, recalls were voluntary and I don't believe that there were any done on the '64 Mustang. it is known that 1st gen Mustangs have a fuel tank vulnerable to rear-end crashes, but there was no government mandated safety testing back then, either.64 1/2 Mustang prolly had less recalls and better build quality for the time period.
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