my cousin found one on feebay a few months ago by looking at console shifters for B bodies. Not every seller knows the difference and the one my cousin scored was listed as being for a charger but after looking close at the pictures it sure was an A-body unit. So I would just keep my eyes open and be observant.
The A-body unit has "HURST" sideways and the B unit has "HURST" upright, one dead give away. Some people are so unobservant they wouldn't notice small differences even if the differences kicked them in the nuts, so pay attention and you might get lucky and find what no one else noticed.