Im convinced there is so much bullshit with these companies Right stuff is a joke

First order of Business, you have a Disc/Drum master cylinder On your 4 wheel disc brake installation.

That's a big problem.

Better call Dr. Diff and get the correct master. He knows and will get you what you need.

And yes disc brake conversions are complicated to get right. Bolting on the parts is one thing, then getting it to stop smoothly and safely is another level of expertise.

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The power booster kit is a disc power booster conversion from rightstuff