DESCRIPTION --Universal style. --The universal booster will bolt up to most street rods, hot rods, and many other vehicles without a problem. --Master cylinder mounting bolts center to center 3 3/8". --4 Bolt firewall or pedal assembly mounting center to center 3 3/8". --A deep zinc finish gives it that show-car look that is guaranteed to catch the eye of the most discriminating enthusiasts. --We highly recommend you purchase the booster and the master cylinder from our store together, which will be perfectly compatible with each other. If you already have a deep pushrod master cylinder and you purchase our short push rod booster alone, you might need a pushrod spacer for installation. --Package: Including all items in the pictures. Note: Professional Installation is Highly Recomme.