My car (1977) does not have the interlock feature.  There's a lever under the key that you have to raise to turn the key, but that's it.  I'm gonna have to have the shifter re-built.  It's just too hard to get to for me to work on it from the garage floor.

|UPDATED|10/9/2013 1:11:31 PM (AZT)|/UPDATED|

Yep, I think '76 is the last year with the reverse/ignition interlock.  But on mine nothing visibly rotates on the steering column.  It's all internal.