Marcos Maniacs

I am considering, attempting to make a three master cylinder pedal assembly for my Marcos V6. One for clutch and two for brakes. The front brakes would have a master cylinder and the rear brakes a separate master cylinder. Also attempt to make some type of brake bias bar (adjuster) if room, not sure on that one yet. Questions; What size brake master cylinder for the front brakes (Triump GT6). I think .650 inch ID, for the front disk brakes. Rear drum brakes (Ford Capri, rear load differential), same as front? For the clutch what size master cylinder? I am thinking this over at the present time. Car came with a tandem master cylinder from a Triumph Spitfire, did not allow the pedals to move all the way forward. Thank you for the time and information. Not a race car, I have seen pictures of this done on a Marcos. Steve V. Marcos in Arizona