1973-1993 Chevrolet and GMC Truck Chrome Master Cylinder-Brake Booster Combo. Chrome plated brake booster is an 11" dual diaphragm. Chrome plated master cylinder is a dual reservoir model with 1 1/8" bore, shallow hole design. Works well with disc-drum brake setups and with aftermarket disc-disc brake setups. Master cylinder ports are on the drivers side. Ports measure 9/16" and 1/2". Includes a push rod assortment as shown for easy installation. All new components. Made in the U.S.A. and chrome plated in the U.S.A. Support the American worker! Just say "no" to China! 1973-1993 Chevy GMC Truck Chrome Master Cylinder and Brake Booster Combo 2132NA We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.