On the diff bushings ensure you support the ear if you are knocking the old one out with a large socket or steel pipe. Penetrating
oil and a heat gun on the Aluminum ear (not the bushing) also helps.
The carrier bushing can be chain drilled (multiple holes) then connect the holes with a narrow Sawzall blade.
https://www.homedepot.com/p/Milwauke...5161/203168541
Once the center is out cut the steel bushing outer band with a reg Sawzall blade. You don't need to cut all the way thru the band, just 90%. A good smack with chisel and the band with break and the bushing will fall out with very little effort.