Can confirm the 32 cold weather package included bigger battery, battery tray, and thicker loom like the R34. They also have a different loom in the doors for the extra wiring.
Fantastic work! I've love to know how you managed to get all the information for this knowing how un-forthcoming Nissan were. Well done to everyone involved. No small task and is much appreciated!
Edit: Just had a decent look over the site, what a great resource to have all the information in one place and be able to add current information for each car by VIN. Priceless