Sounds like a winner
If I just get a zippered outer bag like the ones that come on the Sanitaire, made for the paper bag, I can either use that with F&G bags or convert to ST set up. I didn't realize that the outer bag had the clip on the bottom as mine does. That's where I was getting confused about the mounting at the bottom.
The dump bag that's on mine has to be dumped from the top after opening up the bag at top, like the older Kirby's, with no zipper. I'm thinking this dump bag that was on my SC888 was from an older Sanitaire made when paper bags weren't offered for the Sanitaire line. This model has the wide wheels all around and you can change the fan from the bottom without removing the motor from the top, there's a clear cover over the fan that comes off easy ti check or replace the fan.
I've got the Heritage II bag and emptor that I bought to upgrade a classic ICR. I could borrow the innards from that and see if I like the difference in performance on the Sanitaire and go from there.
Thanks for sharing your ideas and advice.It will be nice to have a bagged or hepa bagged Sanitaire that won't belch dust out the bottom if I were to bump the bag against a wall or furniture while vacuuming. Frankenaire enters the 21st Century!