What you do is: install bigger discs and harder pads, but now comes the problem.
The pads will start eating the discs, so you end up buying stronger discs, but these are not always
available for your car.

So, just make them.

  You start out with some Aluminum

And turn it on the lathe, so you get the rough hub.

To clamp the disc onto the hub, you need to make

a pressure ring. use hard steel.