[chevyrestoguy]

It's not a direct bolt-in due the emergency brake bracket on the 60-66 trucks. This bracket does a combination of things, it's secures the E-brake assembly and it also becomes the lower attach mount of the column. You can use a 67-72 column, but you have to weld the column tube nutplates from the 60-66 column into the 67-72 tube. These nutplates are the lower attach points for the column.

I was originally going to use a '68 column in my '64, and I modified the '68 column tube to work, but i wound up finding a '65 automatic column. I have the modified tube in my parts stash. All one would need to do is disassemble the 67-72 column and swap tubes.

If you use the later column, you have a few options on the shaft section between the column and the gearbox. One, you can use the '67-'72 section, and it should work. Two, you can get the parts (u-joint, section of 3/4" D-D shaft, gearbox shaft adapter and rag joint) and make your own. Three, you can use a section of your original '65 shaft and buy a combination u-joint that goes from 3/4" D-D to 3/4" -36 spline.