Alistair, I think you are missing the point, its going to be LOUD!
LOUD!
As if things like "chassis dynamics" and all that nonsense effect how a car handles, its all about being LOUD, thats where real grip comes from, like F1 cars, they make lots of noise and stick to the road like glue man!
OP,
In a few years when you are old enough to get a driving license I wish you good luck with starting your project.