Yep, although with the later Nissan ones they were not much better than aftermarket for a while there. I got 6 months out of the factory set, 4 and 5 out of the two aftermarket sets (both replaced/refunded - Nissan actually ran out of mounts at that stage so couldn't supply the factory part). The set I built was made with red urethane bushes machined out of red 2" rod, and solid steel. Transferred a bit more noise and vibration at certain RPM ranges, but compared to factory virtually indestructible...
This was an import SWB non-turbo 'black top' motor that was actually a bit of a sleeper demon torque wise. It would the dyno off the scale at the local engine rebuilder fella in every gear, first time he'd seen that in a non-turbo. I never had the history on that motor, but the thing had some go - the only things that slowed it down were hills and fuel stations. It's still owned by the family and still pulling like a school boy.
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