I want to fit a dual master cylinders and/or pedal box to my track car. I want to be able to adjust the front/rear bias and run the lines inside the car.
I understand that rather having a X split, in these setups you have one master cylinder drive the front and the other drive the rear. I therefore of course will need to replumb the brake lines.

I have seen some applications whereby people have run braided flexible lines throughout the car rather than hard lines. I have seen some applications with JIC fittings and others with banjo M10.

What setup do people recommend?

Do people have any pictures of similar setups?