tuff wheel adapter
I apologize, I thought this was a different thread when I posted the comment about seeing the OE adapters for sale.
As I recall, you can bolt a Tuff wheel to an early column, but you need the kit from Grant. I was planning to do this with a red Tuff wheel on my '63 Valiant, but sold the wheel.
Have to admit that I don't remember when the change was, though. I know the earlier columns had a much smaller diameter, and I think the key was in the dash instead of the column.
That's about all I know.