This 1962-74 Mopar master cylinder kit uses our late model aluminum master cylinder with prop valve. Not only is the aluminum master easy on your eyes, it is much lighter and exhibits excellent corrosion resistance. We offer two types of brackets that accommodate many B body and early A body cars which have four studs mounting it to the firewall. The 1973-76 A body cars use a separate adapter (pictured) with four mounting holes attaching it to the firewall.