Marcos Maniacs

Hello Group,
         The clutch master cylinder on my car has seized ......I have
a spare brake master cylinder........I have been told that increasing
the bore size of a master cylinder will reduce the "mechanical 
advantage" and so make the pedal effort higher ........My question to 
everybody is......... how much pedal effort is required in stock form?
  Of course each engine /trans combo will have different results but I
 can draw my own conclusions from the feedback.....any comments would 
be greatly appreciated.
          Dave #5577 
P.S. I found out that the power windows came from a Vauxhall 
Viscount.......read...........(hens teeth)