I have not tried it yet, but I think you can use the whole S10 manual tilt column if you get the matching vintage wiper motor and wire the Malibu harness to match positive/negative. The S10 toeboard plate is different, but you can swap the G-body plate with a few spot welds. some useful reading here:
https://gbodyforum.com/threads/finding-tilt-steering-colum-for-78.53745/#post-454563
https://gbodyforum.com/threads/unobtainium-alloy-tilt-manual-column.49558/#post-420420
https://gbodyforum.com/threads/finding-tilt-steering-colum-for-78.53745/#post-454563
https://gbodyforum.com/threads/unobtainium-alloy-tilt-manual-column.49558/#post-420420