Power brakes to manual 4 wheel disc

I have the same setup except 72 front and 8.8 rear....manual brakes. I used wilwood 260-11179. Got it on amazon for like 80 bucks. It works great.
4 wheel discs on a 68 fastback. I used the original block, (not a proportioning type) w/ a 1987 dodge diplomat alum. master cyl., works fine .