i've got a universal bias box from rally designs, ive utilized the standard pedals, mounted the box in place of the servo and made up a puch rod bar to go between the brake pedal and the master cylinder push rod. The master cylinders are wilwood and the whole lot was approx. £140 iirc. The only problem with this is that the inner master cylinder sits super close to the fuel line on the fuel pressure regulator so this will need addressing but i thought that it would be easier to sort than mounting pedals within the car, upset driver position and also easier to get to to adjust etc etc..