Monarch Brake Servo Upgrade Kit. Provides 30% lighter pedal. Price is for a reconditioned master cylinder, brake servo and brake fluid reservoir. These are fully reconditioned and are also s/steel sleeved. Our kit includes reinforcing plate/ template for drilling new holes, additional bracket for manual cars & a non return valve. n.b. THIS CONVERSION REQUIRES A SMALL INDENT IN THE INNER WING & RE-DRILLING OF MOUNTING HOLES (templates provided).