New 8 Inch Dual Diaphragm direct fit power brake booster & master cylinder combo with brake line kit and adjustable valve. This top quality power brake booster is designed mount directly to your factory firewall. This power booster works great as a factory replacement or as an upgrade from manual to power brakes. This kit features a new factory style 1" bore master cylinder equipped to work with front disc rear drum or 4 wheel disc brake applications.