i dont know as far as bearing replacement its self. if the right mount has to come out. for removing the IM shaft, my trick was, remove front mount, you now (should) have enough room to lower engine and the shaft will be free to slide out.
the outter bearing i dont know if you even need to do anything else, in this area. in fact the motor can be at its normal level/height, may be the case. its having the bearing press tool. this is very back-yardie. the inner bearing, i do not know if it can be serviced, it needs to go to a shop, is by best advice, both actually, for best results.
if you have a shop that can do both with the block stripped and in car, that would be the key. having the block out of the car, any shop (who would take the job) can do it. so prep engine by stripping, prob be better if you are able to have crank in for this. and have a shop who can take it. get a way to tow or get her over there. (for a real close shop, i 'soft tow' her, at like 1am-2am in the morning, into shop parking space, and he's ready for it when he sees it).
