I have everything except reboot working with the X58a-ud5. Here are the files you'll need.
What i did was this:
1. From a mac, ran digital_dreamer's script. Installed v10.6 to my HDD, ran through steps 1-4. Installed Chameleon 2.0 RC4. Changed all the Plists - removed all video and audio and NullPowerManagement. Only Kexts installed are:
Installed the Kexts, updated the boot cache.
Plugged the HDD into my X58a-UD5. Booted it a first time. It comes up with SVGA graphics, no sound.
Installed DSDT_SE. Loaded up my DSDT, compiled and Installed it. (Bios F5 was used). Rebooted.
System comes back with power management, 1650x1024 graphics, all the good stuff except sound.
Added the LegacyHDA.kext to the script's 10.6 kext/Audio directory, ran the script again, installed the kexts again. Rebooted.
Issues i still have:
1. Reboot doesn't work. It shuts down, the bios BEEPs like it's about to come up, but it never recovers from the black screen.
2. The HDD icon is orange, like it's an external drive. Doesn't bother me.
My system is the X58a-ud5 with an NVIDIA 8800GTS/640MB.