early a master cylinder swap

seabee,
Yes, you can use a newer aluminum MC. All are 2-bolt, so require a $30 adapter plate (ebay). Use one from an ABS car, since just 2 ports, and also pre-2000 before most changed to bubble-flare ports. I have an MC for a 95-99 Breeze ABS on all 3 60's Mopars. Many here use one for a late 80's Dodge truck.

Thanks Bill,

Is there an advantage to using the later MCs over say a 1967 dual MC on a drum brake car?