I think I'll have to make something up. The rod doesn't have many threads left, having broken when we tried to loosen the clevis one time. We just cut it off. The threads in the clevis stripped out, which made the rod and clevis separate. One end of the rod is a "built in" clevis - no threads, just a small wishbone where the pin goes through to hold it to the pedal bar.
I'll have to find something to replace it at one end, then look on Jim Carter for the other wishbone piece.