Universal Bosch Hydroboost Kit . Hydroboost brakes are a great upgrade over manual or vacuum power brakes. These hydraulic assist brakes work off of your power steering pump and are more powerful and compact than a vacuum assist system. Hydroboost brakes work perfect with blown engines and engines with low vacuum. Kit includes the hydroboost and adapter plate to work with most firewall brackets. If you need firewall brackets we offer them in our store or we can help you choose what brackets are right for your car. This auction is for hydroboost and adapter bracket only (picture # 3 is for reference only).