I have a set of control arms with 3/4 inch spherical metal bushings that I used for many years that I could sell. They seem to have little to no wear on them. I only took off due to the fact I created some custom plastic ones I was going to produce. So far finding a way to produce them in limited production quantities is not economical, but if they hold up as well as my plastic trailing link bushings they should never wear out. So the old ones are for sale.
Jim Susko