So I just went out to my garage to check the routing on my hydroboost (which the car came originally with). The single hose on the motor side/towards the passenger side is for high pressure from the ps pump. The hose closest to the firewall on the fender side is high pressure to the gear box and it goes to the thread hole closet to the frame. The hose closest to the master cylinder on the fender side is the low pressure that goes back to the reservoir. The threaded hole closest to your front driver side tire is the low pressure side and goes back to the reservoir.
Here are some pics to help explain.
