An OOPS, barrel and battery.
Thats if you buy it with the noid. I've got some spare and will add an ION reg so its ready to go. I'll try and take some photos of the cuts in the body if you wish.
I know it's an old post, and my chances are slim, but do you still have the NXT frame for sale? I'm doing a re-build project and need a frame, so let me know mate...