I had one of those yrs back on my sb, but decided i didn't have that bad of a problem and just went back to open breathers. Mine pulled 3 or 5" of vac cant remember. It was just more wires and another switch. I understand that ford has one thats better than the GM pump. I'm going simple with this deal, open breather on one side and PCV valve on the other. Think i'll get some stuff ordered today.