Right Stuff Detailing Hydro-Boost Brake Booster / Master Cylinder - 1 in Bore - GM F-Body 1967-74 SC105R they are widely used in

they are widely used in aggressive and endurance applications such as Competition Eliminator

Use with (MT-IDM-RM60

369 in Long

design to eliminate lock pull through

Cuts spring seat to 1

Right Stuff Detailing Hydro-Boost Brake Booster / Master Cylinder - 1 in Bore - GM F-Body 1967-74 SC105R they are widely used inProduct Description: Master Cylinder and Booster 1 in Bore Dual Integral Reservoir Hydro Boost Cast Iron GM F Body 1967 74 The Right Stuff Detailing Disc Brake conversion kits are the most complete on the market. You can order a "Wheel Kit" which includes fully loaded calipers, rotors, hoses, bearing and hardware kits, caliper mounting brackets, backing plates (most kits) and spindles (when changing spindles is necesarry). Manual disc conversions