I dunno, my shark had a Muncie, 336 rear, and up north, I just went from 2nd to 4th in traffic.....3rd hardly ever saw any use, 1st saw much more but only on a hill.....
Down here I need an O/D cheapest way was my 1500 buck 200 4r that I built using all the aftermarket parts/kits and it learned how to SHIFT......so in fact it's more fun than the stick shift NOW......