I did this. I used an 83 S10 tilt column and an original non tilt 78-81 A body manual trans column and another 78-88 regular tilt column.
You need the following from the S10
The lower housing/bowl
The lock lever
The special ignition switch actuator rod and the guide for the lock lever off of the upper bearing housing (or use the entire housing from the S10)
You also need the upper mast/tube from the tilt S10 as the top is different from the automatic columns.
The lower piece at the floor definitely needs to be 78-88 A/G body because of the flange. But you can use an automatic one. The difference is the automatic one has holes the the shifter lever. The manual trans one does not.
To put these together requires complete disassembly of the column. The tubes are presses together. To do it right you really need a car to use as a fixture to make sure the top mounting bolts end up in the correct spot.
I used the steering shaft from a regular 79-88 tilt column as they are multiple pieces pressed together. The S10 shaft could be used be it seemed like a fight I didn't want to battle, besides the A/G body shaft was already the correct length!
I used the 79-up shaft so I could use a Jeep or Astro lower shaft. Mine worked out great but it cost some $$ and a lot of time!