Just replaced the upper A Arm bushings on a 96 T100 that has 151K on it, the bushings were just starting to show some cracks and going down the highway the left upper A Arm would shake . It has helped the ride on the street, it feels better , not so much off road as its still the same T bar set-up. Was going to do the lower A Arm bushings also but they looked fine, the bushings that are made in Japan seem to be better than knock off brands.
Still have 4 new lower A Arm bushings for sale if anyone is interested.