Hello!

Problem #1. My Dart has been garaged for six years and brakes need some service before going batk to the traffic. This picture shows the master cylinder it has installed in:



This is not Dart original master cylinder. Could any of forum readers identify this? There is no part numbers in it. It has 1" bore, and it is for disc brakes. Probably for late sixties B-body. I like to mail order a complete replacement but I have to find the correct model. Four bolt flange is a must as the brake booster has such a mounting.

Question 2. There is 4 piston calibers at the front of the car.



Part stores like Rockauto are listing at least 2 piston brands for 4 piston calibers. Which ones will fit to my calibers? Are these calibers "Kelsey-Hayes" or "Bendix" or something else. I have never worked with these except once replaced pads. Unfortunately I have no package left from the pad installation.

Those are Kelsey-Hayes. The KH calipers have cross-over tubes, while the Bendix have an o-ring between the two castings. You could look at MC36406 Raybestos master cylinder for a 73 dart with power assist disc/drums.