EFI tank with Carbureted engine plumbing questions

Thank you @ChargerST for the catch.

I am diving deeper on getting this setup correctly. Tanks Inc recommends the Edelbrock 174053 regulator, I will be looking at the holley 12-880 (recommended by holley) and the Fuelab. I have sometime as I wait for the fuel tank and hardlines

I learned the feed line should be 1/4 to 3/8s and the return should be 3/8 - as goldduster318 - I will be running both 3/8s hardline