These brackets are designed for master cylinder/booster combinations from The Right Stuff to mount the booster to the firewall. Will fit most aftermarket 7 8 9 or 11 boosters with the standard 3-3/8 square bolt pattern.Note: For use with master cylinder/booster combination GF902109 and others with the standard 3-3/8 square bolt pattern.Applications:1955-58 Chevrolet Full Size Passenger Car
