These 1955-59 Chevy and GMC truck firewall mount power brake booster kits are designed to enhance your disc brake system and made to allow extra clearance of valve cover combinations. A must when running disc brakes on your 1955-59 Chevy or GMC truck. Works with LS conversions. Once this assembly is installed it is triangulated making it extremely stable.

Specs:

8" dual diaphragm power booster
Firewall mount with pedal assembly
Rubber pedal pad
Adjustable Pedal Ratio of 3.71 - 4.33 : 1
1.00" Bore Dia master cylinder