Wilwood now makes a performance master cylinder with a flange specifically for Mopar's unique four bolt pattern. The rectangular mounting flange of our Mopar Compact Tandem master cylinder matches the A-body, B-body and the E-body firewall mounts in the 1960's and 70's. Available in 15/16", 1.00" and 1-1/8" bore sizes without pushrod, 15/16"" and 1.00 with pushrod and Mopar style eyelet. Available in either a chrome powder coat finish or a glossy black E-coat to complement any engine bay. These kits are available that include a combination valve with a hydraulic brake light switch, adjustable proportioning valve, bracket, and plumbing.