Finally got a chance to work on this project again.
I followed Andy's procedure ... SUCCESS !
Well, not quite, as audio is still not working. But can now reboot without any boot disks.
Internet is also working.
In About this Mac, it reports the correct amount of Ram, but the wrong frequency, 800 instead of 1866. And DDR2 instead of DDR3.
In UEFI, I set the CPU ratio to 32, but it recognize the CPU speed as 3.4Ghz(34 multi).
So far so good, I just need to tweak it a little bit more.
Thanks Andy!
By the way, I also used TonyMac's MultiBeast to install the audio (889 for the Deluxe, but it's not working), the Lan, etc.
Also installed the BridgeHelper package.