My 68 has the 77 Granada front discs. What year master cylinder do you think I have? My master cylinder started leaking really bad. It is rusty and in real crappy shape. I need to replace it. I'm pretty sure the car was 4 wheel drum brakes before the conversion. What year and model master cylinder do you think I should get and if I take it off, how can I tell? Any ID numbers I should look for? What if the ID numbers are too rusted to read. Then what?