Brake booster math exercise

[stubrennan@attbi.com]

Our original brake masters are 0.875" diameter, right?  Then dropping to 
a "single" master of 0.75" Diameter would give you about a 1.36 gain in system 
pressure for a given foot pressure, right?  With a bit more pedal travel, of 
course.  So does this gain make up for the removal of the booster?  What was 
the "gain" of the original boosters?  And how do you calculate this for dual 
master cylinders?

Stu