I am not a fan of wholesale bushing replacement since so many of them will be fine, I think, if you inspect. Look for the ones that are bad, like the rear trailer arm (big ones only) and the torque rod bushings. Others may or may not be flaking but without deterioration or separation, it is just a huge forearm workout excercise to do all the bushings. And it is a lot of work requiring a press or a HUGE bench vise, the TAB tool and a couple of weekends at least.