Master cylinder and brakes question for a 65 Dodge Dart

I did mine on a 65 valiant a few months ago, I looked at kits and did a ton of research and the cheapest and easiest method is the one I ended up doing. I got a manual brake reservoir for a 1967 dart, ran the front reservoir to the distribution block to power/brake the front wheels, blocked off the hole (with a lowes threaded/allen head block off) in the distribution block that the long line runs off of to the back of the car, for the back brakes. Coupled the line from the rear reservoir to the long line that runs to back brakes. one reservoir for the front brakes, one for the back. No kit, no new block.