I wouldn't use OE trailing arm to chassis bushes in a pink fit.
Current production are garbage, there's so many cases here in Oz of OE bushes failing in ridiculously short time periods, and they bind far too readily.
IMO, and many on the AULRO board, Super Pro urethane bushes are so far superior to OE I wouldn't consider anything else.
They use an appropriate durometer for the urethane with a better designed bush and heavier duty (than OE) hardware.
They allow more articulation than any other bush by using tapered faces and an annular groove which allows displacement of the material in articulation without inducing compression induced bump steer.
My set have probably 240,000km on them now of hard use and are still fine, (my 130 is a work truck)
How many sets of OE bushes would you go through for the same milage ?