Try calling John Gregory at Gregory's Sweeper Central in PA. He owns an authorized Hoover Service Center and has been in business for decades. He has lots of new old stock parts. 570-343-2020. He is the resident Hoover Expert and Guru of all things Hoovrah.
I tried calling John about those fans. He said he doesn't have any and they have been no longer available since 2012. I am also looking for one myself to go on an Elite that I'm selling.