I'm planning on have Old Bones, the leader of the New Orleans Zobop - a grand zombie - make an appearance in my game (if the PC's get that far). I have stats for a Grand Zombie from MitS (SR3) and a little information from Target: Smuggler's Havens.

Here's my question: What do I do with spirit energy? In SR3 it augmented the force of the free spirit. I was thinking that it would be similar to edge but since free spirits don't have their own karma how do I represent the "experience" of the free spirit?

Any help would be appreciated.

Oh, and just in case the players are planning on peaking, please put your response in spoiler tags.

If I recall correctly, Spirit Energy is a lot like Initiate Grade. Would it work to just treat it like that?