power to manual brakes

Look in the rear of the MC, the piston "thimble" and if it has a wide circular groove in that tapered barrel about halfway down then it can be used with a manual brake pushrod. Cut a piece of parts house vac black neoprene line & slip it on the rounded pushrod nub end so its in the groove then cut a thin shallow groove along its length front to rear on the outside for air to excape so it can lock into the bottom of the piston groove securely. I've seen 2 lengths of manual pushrods (maybe more) & the adjustable MP manual pushrod is a quick/easy/good/cheap fix. the bore dia of the current MC may or may not cause pedal effort issues but get it up & running then swap MC's if needed. If there is no groove in the thimble then you need a new MC right now. PB can use a MC with or without the groove but manual brakes REQUIRE it. (2) issues: groove or not and bore dia. "bench" bleed the MC on the car then the corners