Will a mustang master cyl work on a tbird?? The flange looks the same and the bolt holes line up. We'd be switching from a single master cyl with power brakes to a dual cyl. It has disc front and drum rear
dont use a mustang m/c as the bore isnt the right size. get one instead from a 67-69 tbird. they also have disc/drum brakes, and are a dual m/c. they are properlt sized for your 65 tbird.
why use one? i dont on my falcon. i use a couple of "T" fittings, one of which has the brake light switch installed(rear line). you will only need a proportioning valve, and i would use an aftermarket adjustable valve.