Contact WiebeTech and ask if the TCS1-1 can be used to boot off an HDD with OSXS. (it probably can, since the firmware supports booting OS X, but not 9 - don tell em bout the flashing though)

If yes, drop by a pc shop and get a PCI based SATA controller with silicon image 3512 (Sil3512) chipset and flash it.

Or hell, even if they say no get one anyway for use in another Mac.

Alternatively, if there is someone on the western side of Canada who wants to mail me a copy of an OSXS disc I would try it out with a Sil3512 card in my rev1 and rev2 B&W G3 mobos.