Electric Fuel Pump install for carbureted engine

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I am reaching out to the collective advantage and wealth of experience and knowledge for guidance. I am in the process of installing a new Tanks, inc fuel system in my 74 Firebird that has an in tank electric fuel pump, routed up through an in-line filter, to a fuel regulator that will reduce the flow for a carbureted engine and will be mounted in the engine bay.
That much i pretty much understand and the rational was that i needed to replace the original pump anyway. The electric fuel pump should provide more consistent fuel to the engine and if/when i ever wanted to replace my Pontiac 400 with an LS engine, I’d be that much closer.
The questions i am wrestling with and why i am reaching out is:
1. Do i need to install a return line from the regulator back to the tank?
2. If so, how is this routed? Right next to the outbound fuel line? What kind of hose clamps do you recommend?
3. Is it necessary, or does it make sense to cut an access door into the trunk floor?
I may end up with more questions, but if i knew the answer to the return line dilemma i think i could get close.


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