Plumbing Aeromotive Stand Alone EFI Regulator - Which Ports Go Where?

I’m trying to plumb an Aeromotive, stand-alone EFI regulator but don’t know where to put it, before or after the fuel rail(s), and which ports should go where?

A bypass regulator controls pressure by redirecting flow, unlike a "dead-head" regulator that stops flow. For EFI systems, the regulator should be placed after the fuel rail(s) to ensure full flow passes through the rail and injectors at all times. Aeromotive EFI regulators typically have two inlet ports (one or both used depending on single or dual rail setups) and one return port. Unused inlets must be plugged. The ideal flow path: pump to rail, rail to regulator, regulator return to tank. For dual rails, use a Y-block to split the supply line before the rails, with lines from each rail connecting to the regulator’s inlets.