Poly or Rubber?

o.e rubber is not actually a bushing.
..there is no movement other than to twist the rubber during suspension travel

whatchu talking about Willis? I admit i don't have one in my hand BUT.... is it not two shells of metal with a isolating rubber bush in the middle?

i get what you are saying, that the strut takes all the for/aft forces. But if the bushing is only job to twist, even more reason to make it a bearing surface. (urethane rotates does not twist).

Which leads to another question...How much fore/aft does the arc of the strutrod pull on the LBJ?
EDIT: searching... ;-)