With my 300 MHz G3 Wallstreet, I found the easiest way to install OS 10.4 is to pull the HD and put it in an external FireWire case, then use my iBook to install. It can be done with subterfuge and XPostFacto, but takes forever and there are a couple of tricks which I never remember from one install to the next. FireWire Target mode isn't possible because FW isn't in the old world ROMs. SCSI target mode is, but isn't useful for OS X. I have an ADS Tech USB Turbo 2.0 cardbus interface, a Belkin FireWire Notebook Adapter, and a Netgear MA401 802.11b WiFi card which uses the IOXperts driver in both OS9 and 10. It's a nice Old World Mac with SCSI, serial ports, ADB, floppy, CD-ROM, and all the classic conveniences. It runs Tiger reasonably well, but is clearly pushing its luck a bit, since a crash inevitably results in booting to OS 9.