[reaper71]

What is the main reason you want hydro boost?
Just speaking from experience here.(Not telling you what to do) when running hydroboost setup if the hydra boost unit goes bad you loose your (Brakes and steering!) I found this out the hard way while driving..

Now to help with your question...on the pump it will have A tube coming out usually at the bottom (low side) and a spot for a fitting to go into (pressure side)
On my daily driver (looking straight at the hydro unit) left side pressure hose goes to pump, right side pressure line goes to box and the middle (low pressure) goes to the pump (tube) Hope this helps.

Mark...