Heritage II
The emptor on my Heritage II is not original, but it may as well be, because its been on the cleaner since it was about 6 months old. The original mini-emptor leaked around the seal, and after several seal replacements, I had the Kirby dealer I bought the cleaner from retro-fit a sani-emptor instead. The bag setup is the same as the Heritage I, save for the Heritage II bag connector. The rear wheels also had to be changed, to allow for the emptor. The cleaner handles/performs much better(IMHO)with the full size emptor.
I don't know how many Heritage 84's were made, I got mine from ebay a couple of years ago for almost nothing. The cord was bad. I have it because it was Kirby's first commemorative model, and with a little polish and a new cord the cleaner is like brand new.
My Tradition and Classic Omega have also been converted to a Heritage I disposable bag set-up.