[KamRacing]

To be honest the brakes are one of the last of the chassis mods to make.

IF you are properly building the car for track use first gut the car and get rid of all the weight.
A lighter chassis brakes, accelerates and corners better and also has less weight transfer forward, making the brakes for effective as there is less kinetic energy to transfer into heat.

Better suspension will reduce weight transfer forward under braking again helping reduce the energy needed to be dissipated

Once this is done, and you have the tyres you are going to use then you look at the brakes, evaluate how effective your current brakes are and the best way to upgrade.

Kev