Probably just add stiffer suspension I guess, if the amount of downforce is realistic then that's all you can do
I don't think it'd help, right now the car tops at 190 while real-life gt300 cars can do right under 300, and it has less than half the total amount of downforce of a GT3 car at 200, which in tur nis less than a GT300 car.
Possibly. 200kg too much to be exact, i didn't think it would affect top speed that much. To make it lighter i must lighten the nodes a bit and destiffen the beams until it's stable, right ?
Either that, or reduce the amount of nodes. Also when destiffening remember about torsionbars. And 200kg is a lot for this kind of car.