Diff between XBOX source dump and jasdk_modbase with irrelevant stuff removed.
There are a lot of vehicle-related changes, it seems like the Asteroids mod was added into the Xbox version, or part of it.
There are also some things about turrets, MOD_s, etc.
May want to port some of that over.
There was also a ja_melee_mod.zip in the source dump, might be worth diffing that too.