I don't have a Z-3i rev 6.7 or 6.8 6860. But I do have a Z-1i (6860 rev 5.42) for sale (A-1200, complete with booklet, spacers and keyboard adapter (choice of two)). No need to reply if you don't want/need it, you probably have your reasons asking for a Z-3i. It won't fit in my Invinitiv tower without extra bays with my current accelerator and I figure it might help you out.
Update: no longer available