Electric Fuel Pump, with Return- Fuel System Questions

So....I am installing my 360/727 into my 74 Duster, in the next few weeks. I have done alot of research and reading but I have not found my answer yet so I figured I would ask for some input, and maybe a direction to go.

I intend to Single Turbocharge my 360 later on down the road, so I decided to have most of the Fuel System up to snuff before I actually mock up the turbo system so that I would not have to purchase 2 seperate fuel systems.

I purchased a single Walbro 255lph (93 Mustang Fuel Pump) electric pump and install kit off Ebay for $91.00 shipped.

I purchased a Stainless 3/8" A-Body Sending Unit.

I purchased a brand new 72+ Abody Fuel Tank.

I purchased a Mallory 4309 Bypass Fuel Pressure Regulator.

Ok....My question is this.
I intend to run a 3/8" return line to the tank.

What do I need to know about how my Duster (1974) fuel system is vented? And what will I need to change to be functional with a Intank Electric Fuel Pump, and a Bypass/Return style setup?

Thanks in Advance
Prine