I'm new to this site, but I have a couple small offerings: I installed Tiger on both my clam shells when it first came out, perhaps they are the later models 366 and 466 respectively.
I use them as wireless printer servers primarily since I was able to find and install airport cards. They each have one USB and one FIREWIRE Port. I also have the cable for AV out which I may try since both screens now appear blank (although by looking closely faint shadows can be detected. I access them using screenshare from my newer machines and also putting them into firewire disk mode by pressing the T key when starting up.