Change 1-2 gears to lower ration gears 1967 Dart Automatic (904?)

Ok, gotcha
But then, I gotta say this; That low gear set is also a wide-ratio set, and it plays very nice with low-rpm,hi-torque engines, and with really tall hi-way gears. But
.....it doesn't play all that nice with Hi-RPM engines. But I'm guessing you already know that.