This is really getting funny..... Go back and read your initial post. You ask if a GE pump can be rebuilt. TWO very experienced people have told you its not possible, then because you dont like the answer you argue with both of us about it.
I'm not usually rude, especially on websites like this, but what's getting "funny" is the obvious arrogance with which you speak, even in a mocking tone. It seems you think you're the sole owner of the absolute truth. Well, my friend, with all due respect, I'm going to disappoint you: you're not. I understand you have experience in the repair field, but that's it: Your experience, and from a service standpoint, Filter-Flo pumps must have disappeared from everyday use more than 15 years ago, when a brand-new, original pump could be obtained very cheaply and easily, so your experience may be somewhat outdated.
Look, I'm an electrical engineer. I studied for five years as an undergraduate (the length of the program at the University of Zulia), then I did postgraduate studies in various specialties, including mechanical parts manufacturing. One of my professors was William Johnston, an American engineer and manager at Baker Hughes, and if there's one thing he taught me, it's that one of the missions of engineering is to make the impossible possible, through techniques and tools, whether existing or developed for that purpose.
Actually, given the way you try to impose your experience, I can tell you that I don't care; it's not relevant to me under these conditions.
When I have the time, the need, and the desire—that is, whenever I feel like it—I'll start devising a way to remove the coupling, modify and/or manufacture a new seal and also a new bushing, and, if necessary, manufacture a new coupling and shaft. As soon as I achieve some result, I'll share it here for other people who find the procedure useful and also for anyone who believes it's impossible.
I don't know what city or town you live in, but out there in the real world, do you know how many things throughout history have been declared impossible and then, in the most foolish way, became commonplace? Just because you haven't tried or achieved it doesn't mean it isn't possible. Remember that.
As we say in my city: Every mind is a world in itself, but the world isn't just your mind. Cheers.