Big Block A body possible with a Column shift Automatic?

My question is why do you want to keep the column shift? is it because that's existing and saves money? I've always felt fumbly trying to be a ricky racer with a column shift.
I would like to install a floor shifter but dont want t cut a hole in my floor. Wondering if anyone makes an automatic floor shifter thats cable driven that just bolts to the solid floor so i wouldnt have to cut the floor out?