Cub, are the cases you're looking for ones of the SCSI variety?
I don't SPECIFICALLY have Apple cases, but I do have a couple of 3.5 adaptable and 5.25 SCSI tanks. Each is a 2 bay case and they'd at least be adaptable to your uses. I also have a Syquest 88 meg SCSI 1 drive with the DB25 SCSI 1 style connector (I think) in a single drive case. Oh, and I'm in Ohio....
Let me know if that's of any help :-)
Oh, and my Mac IIse still has my dad's brain in it, so it's not going anywhere