1966 dual master cylinder

Don't forget the "Y" block, as the one for a single resevior m/c only has one input, and your dual m/c has two outputs.

I've heard of people running the rear straight out of the m/c and using the rear port on the Y for the other side of the front.

Never done it myself, but sounds kinda iffy.

64x2- Musta posted at the same time-