you do not have to remove the bronze bush. Just the needle bearing... You need a slap hammer with jaws on it to bang it out. THen the seal comes out the same way.. stop by your local repair shop with the spindles. THey can do it if you do not have the tool. Takes 5 minutes..
I intend to get a new stub axle, as mine is getting pretty rusty. I heard that a new stub axle unit does not have the bronze collar, is this correct? thats why I'm figuring on pulling the old one out, haven't found that part yet..