Hy again HFfarms, I thought there was something odd about how you only had a single master cylinder. Does your truck have an automatic transmission? One other thing I wanted to mention, in future posts please include the year and model designation for the truck you are inquiring about. Some detective work on your previous posts told me that at least one of your trucks is a 1964 C60, that truck would have a two chamber master cylinder if it had a standard transmission, one chamber would operate the hydraulic clutch. Please verify what you have exactly?