If your big bolt has a divorced brake booster then a dual master is going to dictate an all new plumbing design. My '57 has the master mounted on the frame, from there a 1/4" line goes to the Hydro-Vac mounted further back on the frame, from the Hydro-vac a 1/4" goes to a tee and then front and rear.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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