727 kickdown lever which one is correct

In a streeter, with a shortage of low-rpm torque;a lot times if the pull-point is too close to the pivot, then the trans is forever kicking down. So then You spend a lot of time dicking with the TV pressure or or the governor pressure, to get it where you like it. When it would be easier to play with the pull-point.
Same goes if it chirps the tires on every shift, at light throttle.
So perhaps start with the long one. And if you don't like the delayed kickdown, then move to the short one. And if you..... well you get the picture.
But if you have a shift kit installed per the directions, then I think you will like the short 904 one,even more so if you're running it in full-manual mode.
Otherwise : what TB or Rusty said.