Features: * 8" single Zinc brake booster with zinc Master Cylinder.
* This 8" booster is ideal for most small to mid size street rods and customs. * The booster mounts with a 4-bolt pattern. The 4 bolts are in a perfect square and are 3 3/8" apart (center to center).
* The master cylinder features a 1" bore and the ports measure 9/16" and 1/2".
* Mounting Brackets /Rod/Clevis designed Replacement for chevy C10 C20 1960-1966. * Zinc Disc / Drum proportioning valve Kit.