has anyone used a hydro boost in their 57. And if so which one works best. I have orignal 312 in car.
Quite a few of us have, and there are several threads, including this one, in the brake booster section.
http://57fordsforever.com/smf/index.php?topic=1737.0
I love mine, and if I remember correctly it is out of a 2002 Mustang as the '01s and older are too small of a bore size.