ublox m8n gps

i see these advertised and see people who haved used them, however. They are always advertised as working with NAZA lite v1/v2. 1. is this 3 separate NAZA units???? ie..... lite, v1 and version 2, or does it maen there are 2 versions of the lite module??? 2. will it work with my NAZA v2 in my...