I've installed the front disc brakes from a 79 ford granada on my 65 coupe. I used the Mustangs Plus adaptor lines for the rubber hoses at the wheels. The problem I'm having is plumbing the master cylinder. I cand find the right combination of adaptors and cylinder. What year fits best? I have the proportioning valve installed on the fender. all of the cylinders I've found have either a 1/2 inch or 9/16 hole in the back and obviously the lines coming off the valve are a lot smaller. 3/8th I think. HELP



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