Rarest A-Body Option?

Mine's got one. The C/P dealer that I worked at ordered every car with one. Kept the thieves from easy pickings. If they wanted something they had to work a bit harder at it.
After a couple cars had their windows broken to access the inside release, we started to remove the inside hardware and tuck it up behind the cluster. When the car sold, we put it back.
They never figured that one out.