My thoughts:
It looks like AppleAirPort2 may not have x86 code in it at all. I suspect that wireless functionality has been moved from AppleAirPort2 to AppleAirPortBrcm4311.kext.
AppleAirPortBrcm4311.kext's Info.plist has device IDs for three cards:
<string>pci14e4,4311</string>
<string>pci14e4,4312</string>
<string>pci14e4,4324</string>
Someone with a 4320 (Dell truemobile 1300) could edit the plist, then reboot. You should see something like: AirPortPCI_MM: Ethernet address 00:90:4b:7b:xx:xx during boot (and in dmesg).
If that happens, you can use the airport command line to associate with a network.
On my dell d600, I've removed AppleAirPort.kext and AppleAirPort2.kext from Extensions and my card continues to work as it did before. That confirms that AirPort2.text isn't doing anything anymore.
Unfortunately, the 8f1111 Installer's Essential.pkg doesn't have ANY reference to AppleAirPortBrcm4311.kext. Either 1111's AppleAirPortBrcm4311.kext is somewhere different, or 1111 has no wireless support at all, or theres an entirely new way to do wireless in 1111.
1111's AppleAirPort2.kext gives the same error as 1099's
op