I decided to keep the '68 column, modifying it to use the '61's mounting system. I will figure out how to work the '61's horn to operate on the '68 column.
It took a LOT of time mucking around with the column to figure out why it didn't shift, and how it should go back together. But it's done, and it's in.
The spline on the column is the exact same as the spline on the Fox Mustang rack. Interesting. Another 3/4-36 spline u-joint on the way. Anyone need a DD-to-DD u-joint?
Also removed the clutch pedal.