Hey bro welcome and congrats on the nismo, no changes will be needed for you, i know many guys in U.A.E and Bahrain and even Kuwait with U.S spec 370's with no problems at all, I think the nismo already comes with an oil cooler from the factory. You should not have any heating issues, but it is recommended that you get an oil cooler none the less, not because you got the car from the U.S to Kuwait, it should hold up perfectly in our weather conditions, but oil cooler is recommended if you want to drive the car harder, but again you should be ok
