Clutch master cylinder bore size

Looking for a recommended bore diameter for a wilwood master cylinder to run a dodge 1" diameter slave. Using with a valair comp triple disk. Have a set of chevy cylinders currently but they work mediocre at best at the starting line. Thanks in advance.

I'm running a cnc master cylinder and believe the bore size is 7/8? It's hooked up to a factory slave. Nv4500 valair triple.

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