I run the Lokar 23" shifter to my 700R4 Trans with the Floor Mount instead of the tail mount.
Love the Lokar Shifters, I have them in 2 of my hot rods and a gennie shift in the 3rd.
Main difference is the Gennie shifter uses detents (you move the shifter slightly to the side and change gears, the lokar has the push button on the knob.