^-- that's using the existing 9500 motherboard with its 50MHz bus - no case hacking required

If one of those PCI cards is an IDE/ATA or SATA controller, you can add cheap drives.

OS X can be installed (sometimes) with a third party hack.

But if you really like the 9500 case and want later hardware to go in it, go nuts. There will be a lot of hacking to do though.

You could always stack the drive bays up with Mac Minis [)] ]'>