hydro- boost brake using g-m astro unit

There were some threads here on this very thing "quite some time" ago

Here's one

Hydroboost braking systems

Another

hydro boost on an a body

.................and..........

https://www.google.com/search?newwi...1.1.0....0...1.1.64.psy-ab..0.0.0.tjYwdTSe9zQ