Tailshaft bushing removal/install

I’m getting prepared to freshen up my 904 transmission. Is the tailshaft bushing easily removable/easily installed once the tailshaft housing and seal is removed ? I understand it might be packed in there tight. Has anyone ever done this without a special tailshaft bushing tool ?
If so, how and what did you use ? I was think of heating the case or hoping to find a washer the same size to drive it in. But, probably won’t be able to find one the perfect size.