Gc8 import rear diff

[TheGhostMT]

So, I've recently bought a 2000 gc8 jdm import. The rear diff needs replacing and my local jap specialist mechanic says I'll need to supply the diff as the imports can differ to the UK models. 

 

Any of you know where to get one or if they do differ. Any information would be great, cheers. 

 

Engine type: EJ207DW2PR

Transmission type: 85-TY752VBAAA

Diff says "ND1021 99L" on the underneath.