I am not certain, but I don't believe that is the appropriate part. I think the bushing in reference is the metal bushing with the rubber surround that is fit into the actual mount where the axle itself can pivot. I seem to recall no one actually carried that part and you needed to send in the mounts for the bushings to be revulcanized as mentioned above. If memory serves me, the Filling Station offered the service for about $85 each but their catalog isn't working for me right now.
Jeff