Fits 1964-72 Olds 442 Cutlass Pontiac GTO Lemans Tempest Black Hydro Boost Hydraulic Power Brake Booster 1-1/8" Master cylinder DISC DRUM Kit. • Hydro Power brake booster with firewall mount brackets, push rod and pedal clevis.The mount studs for the master cylinder are 3 3/8" center to center.
