1966-1972 Chevelle chrome plated master cylinder and brake booster combo. Chrome plated brake booster is an 11" single diaphragm. Chrome plated master cylinder is a dual reservoir model with 1" bore, shallow hole design. Works well with the original disc-drum brake setup. Master cylinder ports are on the drivers side. Ports measure 9/16" and 1/2". All new components. Made in the U.S.A. and chrome plated in the U.S.A. Support the Amerian worker! Just say "no" to China! 1966-1972 Chevelle Chrome Master Cylinder and Brake Booster 2018NA-2227NA 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.