Chrome 8 power booster bail top master cylinder + pedal bracket kit disc drum and black universal firewall mounted power brake pedal & bracket kit. The 4 bolts are in a perfect square and are 3 3/8 apart (center to center). PV2C Side Bracket Kit + PRAUF1 (Black). This includes a disc/drum proportioning valve kit (self adjusting valve and bracket to mount kit to the side of the master cylinder).