Jurt for the diam of the master cylinder pistons/ cups just take it of the booster and measure, if all else fails you can remove the clip that holds everything in. But you should not have to.
Kurt, I have a used brake master cyl that came of a C30 Chevy dually with a hydroboost, that should take care of all your braking needs. I would worry more about the stock calipers spreading/ flexing
Kurt, I have a used brake master cyl that came of a C30 Chevy dually with a hydroboost, that should take care of all your braking needs. I would worry more about the stock calipers spreading/ flexing
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