/6 question

I race my 67 for over 20 years, Low 13's high 12's.Sold it and the guy is still racing it.The Dart in my avatar I raced for a season and was good for 15's with 4.10 gears.Sold that one too. Still have plans for another hopefully.
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I wonder what the 67's drive train would have done in an early car? That thing was kickin butt.