Switching to Kelsey Hayes setup

ElFin said
If you use a large-bore manual master cylinder, the effort needed isn't too bad. I have the small-bore one because I like to make life difficult for myself.

I think it's the other way around. Small bore gives you less pedal effort, but more travel. The larger the bore the harder you have to push.

I ordered a 15/16" master cylinder from a 73 Duster. I'm going to try it without the Vacuum booster and see what it's like.