First of all Thanks for the impressive guide!
I followed it to the letter and now have a working Lion
However, my cpu is not recognized correctly and therefore Lion is slow as #$&*(@.
I've got the following setup:
core i5 2500k
Sapphire Radeon 6850
I've followed all your steps, copied the extra folder from the macbook pro 8,1 (sandy bridge)
added the kexts at the end of your post to the extra/extensions folder
used kextutil to create a new mkext file for the extensions
updated the boot.plist file to include SMBIOS=/Extra/smbios.plist
My video card shows as a Radeon NI40 (same as under 10.6.7), has accelerated desktop but no working dvd player, etc...
Network works, installed the lnx2mac 8111 driver from [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url]