I am out of this loop. Bushings are rubber, they have sleeves in them made of metal with a bolt passing thru with a nut. That's what I would switch to if you could, but I guess you have to use the AD stuff, which I am unfamiliar with.
At this point I am thinking a bushing is a bushing - the poly with the metal lining is likely an upgrade, considering it's standard on many vehicles that use shackles. So if I can find the in the correct dimensions I am going to use them.
