Well after having Yamazaki look at my car in person, we both realized some interesting differences.

-very few cars had adjustable intermittent wipers
-JDM cars have a alarm sensor were the map lights are
-We are not sure about the rear seat and if the JDM cars fold down or just have a pass through for the BD's
-my leather seats are in off black, not black like JDM ones
-USDM cars did not get the grab handles in the later years...

Just a bunch of odd stuff for sure...