I have done a lot of research on improving the brakes on my 57 3100 & have decided to stay with the drum brakes.
I am going to use the brakes from
www.praisedyno.com as they make a kit that replaces the wheel cylinder, brake shoes, springs, adjusters etc... around $170 per axle.... PLUS Made in the USA.... I may switch to a dual master cylinder, but if mine is good I will stay with the original.
I am trying to keep the truck pretty original while still being safe to drive.
TC