Replace 1 bushing, or everything?

Been a while since I updated:

Everything in the back is done. Wire-brushed and painted the spring hangers and plates and got the ESPO 6-leaf springs back in. Ready to torque everything to spec soon as I let her down on the ground.

Out front I got the works ordered from RockAuto. Ball joints and all bushings, plus tie rod ends and sleeves. Rebuilding the calipers since I had a torn seal on one side and replacing the wheel bearings as well. Just got one side taken apart yesterday and should get the other side torn up tomorrow, ready to take everything over to a shop and have the bushings and bearing races pressed out and in. 2 weeks to get her put back together!