Manual disc brake master cylinder?

dano said

^^This. Looks clean, no rust outside and inside, reservoir seals, and easier to fill. Add bonus is Cass is awesome!!!

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4 wheel manual discs, stock 4 wheel drum dist block----------
1987 DODGE DIPLOMAT , 15/16'' BORE , HAD ONE ON MINE FOR 9ISH YRS , WOULD BE A BIT BETTER W/ A 7/8'' BORE THO .