Uhm... ya want a straight column? Ya want a tilt column? Automatic shift / manual shift on the column? Ya running a shifter on the floor?
A lot of folks have used various ones out of the squarebodys.
There was an early 1970s chevy van that had a tilt column as well, but from what I have been told most of those have long since been stripped or scrapped.
my '65 c10 has a 1971 ish straight non tilt steering column for automatic shift.
you can see photos of it, here:
pics of my truckIf you want aftermarket, there is a company called: ididit that makes all sorts of fancy steering columns.
https://www.ididit.com/