Couple things that I see that I would be concerned about. 1st, if you only have rear brakes, the line is on the wrong side of the master (rears should be on the larger side of the master (more fluid)) the actuator rod is welded in the center. That seems a little dangerous for me. And if I recall, that was used from the throttle linkage from an AD truck (if memory serves me right.) Take a look at my installation I am doing. Sort of similar. I would always suggest using new parts for brakes. Avoid using used hardware, and brake parts (your life depends on it) My project journal is at
http://www.hotrodders.com/forum/journal.php?s=&journalid=22733&action=view if you go back a couple pages you will see the installation I am doing. (Just my 2 cents worth). The only things I would change is add the residual valves 2lbs for the front Disk 10lbs for the rear drum, get a proportioning valve (adjustable or fixed) move the brake lines to the proper ports on the master and replace the actuator rod with some new threaded rod and ends.
