Marcos Maniacs

On Ron's Marcos, did he replace the brake master cylinder with a 
single circuit master cylinder?  The large round reservoir master 
cylinders were found on Triumph spitfires (and others), this is what 
my Marcos has #8001 (dual circuit).  Did Ron's car have a dual circuit 
brake system?  If the car still has dual circuit brakes I am 
interested in what master cylinder is used.  I quess a dual circuit 
system could be made up of two single circuit master cylinders, like 
some race cars have.  If 2 master cylinders were used I would like to 
see a picture of how the brackets were made.
                             Steve Vukobratovich
                             #8001 In Arizona