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1st one is most likely booster feed 2nd one with vaccum pod is feed line activated at lower rpms.
the pipe on the saucer shaped unit going to the silver log is the fuel pressure regulator vacuum pipe, the other one disappearing under the manifold is the fuel return from the regulator.
fuel pressure regulator pipe and return
One coming from underneath is the fuel line. the one going to manifold is vacuum sensing line.It is a fuel pressure regulator on a fuel rail.I think it regulates fuel pressure according to the vacuum in manifold or load on the engine.