I have a four wheel disc master cylinder I am thinking of trying to install on the Duster. I am running disc front/drum rear. Do I need a residual valve for the rear? I will mount in the stock location.

'75 Plymouth Duster
Phase I 451 906/590/2-660 10.75/126
Phase II 451 Stage VI/590/1050 9.82/135
Phase III 383 906/Victor-Pump gas 11.30/119

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