There's probably more than four - jkbon wasn't saying that those were the only three, just that one Japanese owner does own three.
There have been several GTRs that have competed in the ATGTC - at least four that I'm aware of. Two of them have had a total of five seperate liveries making them appear to be different cars altogether. One of them is the car that was recently in the hands of Symbolic Motorcars here in the US so it's no longer there. One is still running in the series I believe.
There are other customer F1s in Japan - I have seen photos of a silver road car, a red road car (might be the one in the US now) and also a 'Ueno Gray-look' road car with a GTR windshield banner - that one made me laugh. There are probably a few others which haven't been spotted as well.
jomo - as far as I'm aware, there are no photos of either of the black LM's. There was a car featured on the Motorcars Intl website which would give the best idea of what a black LM would look like, but it was simply a 1998 road car with the LM-kit added.
>8^)
ER