I'm in the process of doing this myself as well. I'm at work so I'll try and recall it the best I can from memory.
- Remove steering wheel center trim piece. Plastic circular cover with the rocket emblem on my '69 Val.
- This exposes three screws to take off the horn ring.
- Steering wheel nut comes off then use a puller to pull the wheel off the splines. There might be 3 screws that hold the wheel on too, I can't remember.
- Once the wheel is off you can take out the turn signal lever attached by a long screw, then the turn signal switch.
- Once that comes off there is a retaining plate over the upper column bearing held on by three screws. Remove the screws and plate.
- Next there is a snap ring to remove and you can slide that part of the housing off the column.
- Now you should be down to the shift selector lever housing. Remove the selector lever by removing the flat head screw then pushing the roll pin out. There is a spring resting under the lever inside the housing, pull that out.
- There is a small Allen head grub screw that holds the shift tube inside the column. You can access it through the hole where the shift lever was.
Viola! I think I remembered everything correctly! Respond back if you run into a snag.