Fuel tank and fuel lines-need help

[RestoCreations]

I received my tank, but i am a little confused how to make this work.

I currently have a Smith's fuel gauge, but i do not mind switching to a pressure gauge if that is what is needed.

So, here is a picture of the tank. It has
-two 3/8NPT holes in the front for feed lines or a feed line and a return
- a 1/2 NPT hole in the top for???
- a 1/2 NPT hole in the drivers side for a vent and then of course the filler neck.


So, can someone please explain to me how to run the fuel lines and make them work with either the fuel level gauge or the fuel pressure gauge? I assume that i will not be able to use the fuel level gauge with this tank and will need to run the fuel pressure gauge. However, does that mean that i need to run two feed lines or???
I am going to use a holley electric pump 12-801-1 and a mallory fuel pressure regulator part number 4309

Thanks
Chris