BTB Products has a FJ40 brake booster and master cylinder they say will bolt up and has an internal proportioning valve set for four wheel disc brakes. I'm guessing it's an GM master cylinder and booster with an adapter. They want $425.00. Does anyone know what they're using? Thought I might be able to go to the local parts store and get the same thing for about a third the cost but I don't know what to get.
Thanks
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