Have a look at Tilton's remote pedal setup. It is the frame and masters for a balance bar brake and clutch, but is designed to allow one to make their own pedals and mate it to the master cylinder frame.
That way you can put the masters where they go best, and the pedals can be designed for good ergonomics (and/or looks). You'll have to build linkage between them, but assuming you're in the game already, it shouldn't be an unsolvable problem.
Since Wilwood supplied me with all my parts, I used their firewall tri-master frame and turned upside down and backwards to achieve the same thing.
jp
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