Unfortunately, those bushings are no longer available.
However, I was able to find a solution. I experimented with bushings made for a different type of vehicle. I went thorough about a half a dozen different sized examples before finding one which fit well and worked satisfactorily.
I now supply these to 850 owners as they will all eventually suffer from broken bushings, the rod falls out and you can no longer open the door.
There are eight bushings needed per vehicle.
Would you like me to put together a package for you? The quantity you need is up to you.