The booster mounting brackets are a direct fit to your factory firewall. Master Cylinder Bore Size: 1 in, Bowl Design: Dual Bowl, Master Cylinder Material: Cast Iron, Master Cylinder Finish: Natural, Reservoir Included: Yes, Reservoir Material: Cast Iron, Master Cylinder Cap Included: Yes, Brake Booster Type: Dual Diaphragm, Brake Booster Diameter (in): 8 Booster Material: Steel, Brake Booster Finish: Zinc, Brake Pedal Rod Extension Included: Yes, Mounting Hardware Included: Uses Original, Quantity: Kit. Heavy-Duty 7-Inch Dual Power Brake Booster with 1-Inch Dual Bore Master Cylinder; Cast Iron Master Cylinder Material Built with a Natural Finish... New 8 Dual Diaphragm zinc plated power brake booster kit. Bowl Design: Dual Bowl London, London, United Kingdom Weather Forecast Brake Bowl Leed Brakes 7 Inch Dual Power Booster, 1-1/8 Inch Bore Flat Top Master Disc/drum (Chrome) 2L6B2 | Camaro Depot Booster Bored Brake Booster Type: Dual Diaphragm 24" Modern Ceramic Table Lamp Set of 2 Bedroom Lamps, 3 Color Dimmable Bedside Lamps for Living Room Farmhouse Nightstand Lamp(Rotary-Cream White) · $67.48 Also Included in this kit is a new 1 bore master cylinder perfect for most front disc /rear drum or 4 wheel disc brake applications.