[dmsfrr]

You can leave the two vacuum hoses off of the fuel pump without affecting its operation.
IF you want an operational heater and it has the original heater setup you will need a vacuum hose from the existing fitting on the intake manifold to the dashboard heater controls.

Photo:
showing the "T" fitting in the vacuum lines under the dashboard where the vacuum line from the engine connects to the wiper motor and heater controls. The "T" fitting can be removed and connect the hose from the engine directly to the hose for the heater controls.