Hey, check out the forum for other threads on this but according to most the GMT II unfortunately isn't as well advanced in replication as the Submariner. Getting the closest model that has the correct handstack order unfortunately also means getting a movement that is prone to break down. That is why you'll see people recommend the incorrect handstack version that in one way has a tell-tale flaw BUT at least has a higher chance of long-term survival.
I myself would love it if ARF or Noob (if ambitious) would try to make a new replica of the GMT II...