Column To Floor Shift Conversion

Ok, so I've had absolutely no luck finding a steering column without the column shifter on it. I want to change my Auto Trans Column Shift to a Auto Trans Floor Shift. I have found no parts, kits or instructions anywhere. Can anyone help me out? The car I am custom/resto is a 1973 Plymouth Duster with Power Steering.
Thanks In Advance....
P.S. if you have parts for sale to help me out let me now.