If a new one is really nowhere to be found, I'd be welding appropriate sized washers (#8 grade if you can find them), to both sides. Do not quench the welds with water! Let the welds either air cool or cool them with used motor oil. But then again, I just may be a hack!
Are there any parts cars available? You might be able to pick one up cheep.
On their death bed, nobody ever said, "Gee I wish I'd spent more time at work!"