When you asked the question I thought oops I was referring to the outer column ( jacket) So i looked again. At least in 69 there is a BB specific shaft but not a BB specific column ( jacket)
no BB specific column (jacket)
1969 parts book
I checked 67 parts book
Only one manual steering shaft for all engines (power was not an option w BB in 67)
But the column ( jacket) is called out with a seperate part for BB
As for differences, you got me.