Not sure how it will work, but ...
Not sure how it will work, but ... the "Astrotek PCI Express SATA III 2 Port Low Profile Card " costs in expensive Australia:
$26.00
Description is as follows:
PCI Express x1 interface, 2x SATA 6 Gb/s port, ASMedia ASM1061 chipset, supports SATA 1.5Gb/s, 3Gb/s and 6Gb/s HDDs up to 2TB each. Supports IDE programming interface register for the SATA controller, AHCI programming interface registers, error reporting, recovery & correction, port multiplier FIS based switching or command based switching. Native Command Queue(NCQ), plug & hot swap, low profile bracket included. Supports XP/Vistra/Win7/Win2000/Win2008 32&64Bit and MAC OS X 10.6 or above, Linux Kernel 2.6.19 or above.
Note that it says its Mac 10.6 compatible. Not bad for a $26 card.