Steering Column Length Difference between Manual and Power Steering Cars.

IIRC The coupler is different on some if not all cases

The steering shaft is a different length too. (Many will tell you to tap the Manual steering shaft to brale the plastic inner connector and shorten the shaft
Why would you have to brake the inner connector in order to shorten the shaft? Couldn't you just cut the shaft, shorten it, and weld it back together?