Which 7/8 master cylinder?

71Demon said

Got 4 wheel manual wilwood disc brakes installed. Hard pedal and car just wont stop good. Thinking I have a 1-1/32 now. Hoping a 7/8 master cyl will help. Any suggestions on which one too use? I have seen some posts saying use a 7/8 for pwr brakes. Thanks

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With a 1&1/32 size bore, it may take more leg-power than you are used to.You might want a booster.
But if it doesn't stop "good" with a hard pedal, you might consider a problem in the install. I think I would get all 4 wheels up, and have a helper stand on the brakes while you do a walk-around testing each wheel for resistance. You may find one end or the other not working