At least 34 F40s + 1 F50 at a meeting in Japan. Only one of them is stock, the rest are all tuned of course
Video part 1: http://jstylecars.com/?p=213
Video part 2: http://jstylecars.com/?p=214
Pictures: http://www.gonchan.net/club40/03-14-1.html
There's only 18 in the videos but I count at least 34 in the pictures
Then again the F50's the best car there