4bbl intake question

If you get an early A body and build a slightly warm slant....or even a stock Super Six you could stick a 4 speed OD trans in it with 3.91 gears and have a blast and still get great mileage doin it. Your final drive ratio with the .73 OD would be 2.8543:1. That would turn like 2200 RPM at 55 MPH. BUT, the fun is in the 3.09 first gear. Couple that with the 3.91 gearset and you have 12.08:1 which would set your eyeballs back in your head off the line. And all in an Early A body that weighs around 2500 pounds. Even with the 67-76 cars that would be a barrel of monkeys to drive.