Finally managed to get to my tune, so I'll post it too if someone wants to try. Had it around weight distribution of 48:52, but on SH it had too much understeer. This one is focused on lateral Gs (it's possible to get more, but it's too tail happy at that point). You have to be careful with the throttle in wet, but otherwise I was able to keep up with the NSX in Tokyo (especially turns 1 and 2) with this one, even start lapping cars in lap 11. Just remember to shift around 6,5k rpm with this car, otherwise you start to lose power and stop gaining speed.