[Janky59]

My '59 has this sort of pump. Vacuum used to power the wiper motor is provided from two sources. One is intake manifold vacuum, the other is the fuel pump. The wiper motor has two nipples for hose from these two sources.
The fuel pump has hard lines that run from the pump, along the block toward the firewall, then when it ends, rubber hose goes thru the firewall and connects to the vacuum wiper motor.