That car (in most players eyes) is merely a novelty you'd use in B-spec for easy money, or just to screw around with. I doubt anyone has a tune for it, let alone a track-specific tune. Just filling you in, I don't think anyone would mess with a car so fast already. The time difference would be nearly impossible to test as well, as it is hard to drive at it's limit.
I think its a fantastic addition, or at least would be if it wasn't so accessible. the goal of the game is basically to drive it, and when everyone can do that it ruins the exclusivity and increases the amount of online trolls.
High downforce is a must for suzuka, with the lowest top speed setting (about 305) and high front damper extension.
Suzuka: 57.9
Downforce MAX 150/200
Spring Rate:MAX 20 20
Extension: MAX 10 10
Compression MAX
Camber, toe, etc DEFAULT