Even if the wiring already exists in the vehicle (which in this case I wouldn't expect that it does), the software between the Japanese cars and the US cars is different. Some programming will be required to make it work. If, however, you could get your hands on the hardware, I'm sure you can use the Japanese software and just switch it to English.
EDIT: By the way JDM means "Japanese Domestic Market". When you buy something that is JDM, it's originally meant for the Japanese market, not the US.
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2002 Corvette Z06 - Totaled
2003 Corvette Z06 50th Anniversary
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