The hydroboost unit usually takes over the spot on the firewall where the vacuum booster used to sit. You'll need to run lines from the booster to the power steering pump, which will come as part of any installation kit, along with the fittings you'll need, and any brake peda...
Hydro-Boost Systems: The Non-Vacuum Brake Booster Tire ReviewAndrew Markel
One of the most misunderstood brake systems is hydroboost. This system uses the pressure of the power steering pump to power the brake booster. The booster is essentially a power steering unit that supplements the driver's input. When hydroboost was first introduced in the 1970s, the ...