Managed to win with Ford Mark IV in B-spec. No Toyota 7 though, and 2J was reluctant to overtake the cars between my driver and it. If you get it on your tail you're pretty much done for.
Did it with the Ford Mark IV in A-spec. This time with a Toyota 7. After crashing into me and ruining my race about 10 times, I got mad and rammed it head on in the first corner.
Make sure every other car passes, and you get out in front of it. Somehow the AI won't bother to overtake 11 cars, and just settles. You, however, are home free without the Toyota 7-