I have a column form an unknown year Mustang or Falcon. All I can tell is that the turn signal switch is 1963 or later. I am swapping it into my Falcon, as it does not have the nub left over from the column shifter, and it has a separate shaft from the box. I am planning on running an aftermarket steering wheel on an adapter, but there is a change in splines between 1964 and 1965. I cannot seem to find any clear information on which one is which. The interwebs has conflicting information.