Bjorn is right, in 69 thay changed, and there is a rod mechanism for the shifter/locking ignition etc. that will be in all 69's floor or column shift. Even for the floor models the collar will also move as if you were shifting a column shifter. I would guess that the best and easiest replacement would be a 69. I'm sure others would work and could be used (you can make anything work) but there would most likely need to be quite a bit of modification to make it work like the 67/68 column.)

Any 69 F-Body column should be a good doner.

Hope that helps a little?

Brett - 67 Drop Top 455!