Add to Cart 7in Dual Zinc Booster 67 -72 Chevy Truck 1-1/8in LEED BRAKES MSRP: Now: $499.99 Was: Master Cylinder and Booster - 1-1/8 in Bore - Dual Integral Reservoir - 7 in OD - Dual Diaphragm - Steel - Gold Zinc Plated - GM Fullsize SUV / Truck 1967-72 - Kit LEE761A3