I saw this Dual Sanitronic (link attached) recently that is rebuilt with blue Tradition parts. Not sure if it's a factory rebuild or a "bojack".
I haven't seen one rebuilt with Classic III parts yet though.
Joe
[URL unfurl="true"]http://www.ebay.com/itm/Vintage-Kirby-Dual-Sanitronic-80-Upright-Vacuum-Cleaner-/360366862434?pt=US_Vacuum&hash=item53e789f062#ht_1889wt_999[/URL]