Oh really? did Georg turn it down? I guess he was very busy with the MOS back ports.
I think the best person to talk to would be Michal Schulz as he has just got himself a PPC PReP machine, so I guess he has the most PPC knowledge out of all of us.
Johan Grip and Sebastian Heutling are both avid hardware hackers, so they might be able to do a port.
Ola Jensen has actually bought a Peg board already, but he is a non coding member, and I'm sure he's having far too much fun with MOS to want to give it away :-)
I suggest you visit the AROS Forums and disscuss it there.
-Edit-
Oh and if there are any going spare, I'm sure I could put it to good use :-D
Though, what I know about the PPC architecture is only slighly less than the x86... don't ask , I miss the 68k :-P