gentlemens agreement. Or this is what i have been told by the histiry channel lol. But im not worried about being weaker i just need to know how to tell the difference in them to verify his statement. I very well may be wrong on the statement but i think im right as ive read several articles about it. But im getting off topic. I just want to know if i am dealing with a US spec or Japan spec motor and how to tell the difference.