Virtually all of the above is meaningless.
There are innumerable differences between the cars. And remember JDM can mean 4AC S series diff and "ADM" taillights too. All JDM didn't have 4AGE's and disc rear ends.
The only reliable indicator is the build plate, checking that the frame number matches.
The info on here can be simply read to interpret the specs as built.
So many cars are now getting about with various bolt in bits such as diffs, engines, tail lights, door cards etc. that such signs mean nothing.
When I first started to convert mine over in 1990, it was easier to get "JDM" tailights than "ADM" from an import wrecker.
If it really is a JDM 4AGE etc, better indicators of originality besides the build plate, include correct fuel supply and return lines, correct underdash looms and so on which are rarely changed in conversions.