[MAStuart]

Thanks guys for the replies. Now we are getting somewhere.

Larry I think Nick and John Are both correct on the CR and ORA's . If you go on BG developments site the AR' are for some thin rotors.

Nick I wont be bending that tube as it is already welded in. The pedal box and support tubes are not welded in yet. So with some master cylinders on the box for mock up and I will make a mock up of the dash with the steering column opening. It will be possible to get the pedal box in the right place with no clearance issues .

John I am not sure what size the pistons are on the front and rear calipers so it could make a difference on what I am going to say. I think the brakes could use a larger master cylinder on the rear because of the larger volume of fluid going to the rear the cylinder will have a shorter travel and not produce as much pressure . It will then transfer more of the pedal stroke threw the balance bar to the front brake master cylinder. The front master cylinder will travel more but produce more pressure because of its smaller size. This should produce good balance between the front and rear brakes.
Now depending on the piston sizes it would still be possible to get good balance with two of the same size master cylinders as Nick has said.

It looks like I can get 2 of the 5/8 cylinders and use them for mock up and weld the pedal box in. If I go this route. I wont be buying anything I don't need because it looks like I need at least one for each car.

Thanks again for the info! Mark