I've heard tales of using 2 sockets (one on each end) with one matching the diameter of the housing and one matching the diameter of the bushing (or combination of socket and washer on bushing side) then running a threaded rod (or bolt) through both the sockets, add nuts to both ends, tighten....and like magic, the bushing is extracted.
Never tried it, but I would first if I ever needed to do such and extraction. The only problem I see with this is potentially deforming the housing...but then again, it's such a simple idea I'm sure it doesn't work...
