Double panic even there, that's how I tried it:

1. open OSInstall.mpkg from a working Leo 10.5.3 to a GUID formatted blank test Sata Hard Disk

2. Put Chameleon bootloader on that disk

3. Put 32 bit dsmos.kext, ApplePS2, Applesmbios kexts

4. Tried to boot with -legacy flag... double panic

I suppose we need some recompiled hacked 64-bit kexts, just like dsmos, but also AppleACPI... I think it's that stock 64 bit apple kext that generates one of the panic. This is my setup:

Intel Core 2 Duo E8400 CPU
Gigabyte GA-P31-DS3L
4 Gigs of DDR2 1066 MHz Ram
Pioneer DVR-212 Sata DVD-RW

Any hint?