My completely stock 50,000 mile 1968 Formula S notch ran a best of 14.2 at I think 98 MPH. I am sure about the ET, not as sure on the MPH. It was a long time ago. The car had 3.23 gears and 185/70-14 radial tires and didn't spin at all.
I raced my 1969 Dart GTS at Martin in 1972.
i bought it used for 1200 bucks.
it came equipped from the factory with 3.55 gears.
only upgrade was cheapie headers and glass packs.
it went 14.23@ 99 mph late that summer. Was my first ever track outing