Dual Master Cylinder

I had better go tell my friend that has been driving his straight axle 440 4 speed 5:11 geared Road runner for allmost 20+ years he did it wrong . There is no proportion to it just a place to run all 5 lines and a sensor to send the signal to the brake light in the case of a leak . The older junction blocks only have 4 lines that go into them where the newer ones have 5 . Cut both styles in half ( thickness ) so to be able to see the passages and compare .