It was a beige G3 running OS 8.1 with AppleShare IP installed, and a SCSI card and second NIC installed in the PCI slots. The dual 9GB drives were set up in RAID 0; I couldn't get them to mount when booting off the OS 9 install disc, so I took them out, set them aside, and installed OS 9 and 10.2 Server on a SCSI Seagate Cheetah I had laying around.
The 660AV is, at this point, untouched. When I first turned it on, it played the first few notes of the sad mac sound for that model (the "silly" tune, as I like to call it", but then transitioned to the startup chime and finished booting into OS 7.6.1 (Do you think 8.1 is feasible on this thing?)