I believe they've only performed in the US for some festival. But yeah, I agree they should perform in other countries. Their music has hugely contributed for the Initial D series anime and their music has opened up to the international audience.
I wish we had performances like that (taking part 1-3 as a whole) in Germany...but then again, of course there wouldn't be any artist that deserves to have such a show. Too bad the audience is all like "duh"..
in Stage 4 KT actually gets into an accident with the FD and so they decide to just re-due the car with an all new body kit and fixed head lights... and that ginormis wing LOL