good points. 100% sure on okamoto since we spoke to him a short while ago and my boss specifically asked him about mclarens and he said he didnt' have one but liked them very much. thanks for the info on the other cars.
so then the list becomes:
black/grey in ueno clinic colors and with gtr banner
burgundy gt longtail
orange lm
white
silver
silver with red strip
yellow
003 carbon
red with ugly wing
so that's 9 cars in japan that we know about. nice concentration. right up there with england and the US.