Hydratech brake booster
My buggy has power steering and I found brake master cylinder that uses the power steering pressure line to power a brake booster, its a Hydratech brake booster. The links below show the Hydratech brake booster mounted on my buggy, on page 9 its toward the bottom of the page and on page 10 toward the top of the page.
https://www.minibuggy.net/forum/contr...g-wheel-9.html
https://www.minibuggy.net/forum/contr...-wheel-10.html