This is a new Black 9" Power Brake Booster with Mounting Bracket and a new 1 1/8" Bore Wilwood Aluminum Tandem Master Cylinder for 1967-72 Chevy Trucks. The quality 1 1/8" Bore Wilwood Aluminum Tandem Master Cylinder is fully machined from a High-pressure die casting of a premium alloy, it incorporates slotted mounting flange to accommodate mount centers between 3.22" to 3.40" and also features side-hole mounts on 6.40" centers.
