1966-1979 Bronco, 76-79 Ford F100, F150 Disc Brake Proportioning Valve Bracket 1pc Factory for 76-79 Conversion for 66-75 Mounts to inner fender frame rail. Brand new Disc/Drum Valve MOUNTING BRACKET for front disc rear drum brake systems for 1976-1979 Ford Bronco. This Valve Bracket is a direct bolt-on and will fit inplace of your old steel, factory Ford Proportioning Valve bracket. If you need the valve from inline tube it is PR100 for Disc / Drum or PR101 for 4wheel disc. These are the details that separate the first place cars from the rest.