...there is an easy, low cost fix if the shock is rattling back and forth on the top bushing pin. [ which is common].
You can take the one lone mounting bolt that goes through the
the shock top eyelet and sandwich an "O" ring between the
shock eye and the washer. That takes up the side play [which
is the Rattle] dimension of the shock. The bushing itself
is still good. it is just sloppy on the side and this shimming works fine and last long. [And gets rid of the Rattle !! }
What actually has happened is the bushing eyelet glue has dried up and the shock is sliding back and forth on the bushing. The sandwiched O ring stops the sideway movement.