the trunk scans are what circulated around before they were properly distributed im pretty sure.
D-Small used to live right around the corner from me, so me and my boy went over there and picked up 2 copies, and they both said trunk scan on them.
I think its safe to say the trunk scan versions are the ones they were planning on unloading themselves without the help of a distributer.
I dunno the extent how rare they are, but its a collectors item for sure