I have a dual 8" floppy drive unit that was used with the Xerox 800. I've hooked it up to my AltairDuino and when I get the 8800c completed, it will be transferred to that. It uses two Shugart SA-801 drives (SS, DD, hard sectored)
and it plugs right into the FDC+ with a 50pin cable as Drive Type 0001. If you ever see one for sale at a decent price, grab it!