More brake questions..

With the back flex hose,I call it a split flex line(spelling)This line goes from hard line to proportioning valve,the other 2 hard lines at rear go from the split in the junction to each wheel cylinder.This hose is held to the housing with the vent/bolt.Here is a pic of my 73 Disc setup on my 66 Dart,using Cordoba flexlines.
View attachment 66 Dart project Nov2010 068.jpg