Hey guys;
I pulled this out of my car; and have since replaced it with a v5 STi box, as I thought it was a suspected transfer bearing collapse/munched transfer gears.
According to a transmission chart: Ref
TY755VB1AA - Which means it's a 4.44 Open Centre Front Diff + 4kg/f Centre Diff.
I've since split it and found it to be nothing but a collapsed centre diff + shagged centre diff bearing.
Transfer gears are fine - have yet to split the box itself - but very little shavings were expelled from the gearbox itself when I dropped the oil. Only remnants were found actually in the bottom of the transfer case when I pulled it apart.
For those who are a bit tldr - it's going to need a
new centre diff + cdiff bearing, new reverse accent spring + ball bearing, and new adjusting select shim. It will also need replacement neutral + reverse switches.
Would suit someone who needs to get out of trouble and is competent with these and has the parts to fix it, or someone who's chasing gearsets.
$100 ONO - Willing to separate transfer/box for the right price 
0420 555 720 - Taylor