Good place to start, and work down...

[Don P.]

William O. asked,
  "What are those ?"

They are the upper mounting parts, on the rear BOGE suspension components. The 'silent blocks' are pressed into them; folks can forgiven if they've never seen them; they're pretty well tucked away in their mounting points !

Comments ! Questions ? Post in the thread where applicable, so I don't have to send multiple private messages.