67-69 Bcuda Steer Column Lower Bushing Removal

In your last picture you see the hole in the side of your lower collar.
If I am remembering this right that is a set screw access hole. this set screw
holds the lower collar to the inner tube. Once loose the collar will come off
and the tube and bushing will push out the bottom.
Yours is a 67 column, 68 and 69 are different.