I got excuses up the yingyang as to why I have had all the parts for the conversion (for 2 years), but haven't done it yet. I will be using the 94-98 Jeep Grand Cherokee master cylinder in combination with F body front calipers. This will be on an A100 van, and a few people have done it with good results. They claim to have checked the piston volume on the F body as compared to the Jeep front calipers and found it close enough. So, take it as second hand information, but from people I trust.
Ran

"Hey mister, something's wrong with your car, it idles roughly" - number one comment I got in Israel when daily driving a 70 Barracuda with a lopey cam.

Currently working on - 1966 Dodge A100 van 318/auto
Finally - disc brakes on the front.
In the plans - rear disc brakes, B&M 250 blower