get the trans code from the front pass side of the trans, near the fill tube. Find your trans cod on the chart found in this thread on post 1. Verify the jdm MY.
I have a jdm V7, MY '05 and found USDM MY 05 seals etc fit. I do know early usdm my 04 trans used stubbed axles and that changed sometime late 04. Don't think ancillary parts changed.