Hello Sorry for the long post, lot of questions. I am going to break this up work from the fuel tank to the engine. I will underline the questions.

To start I have an 84' Z28 Manual Camaro. I recently was lucky enough to win an Edelbrock EFI System. Part number 3220. I have a fairly new crate 350 running a carb on the car. I am trying to figure out the most stock way of running the fuel system.
My current idea is to use the stock tank and change the fuel pump out for a high pressure unit. Edelbrock requirements are "58-60 psi of fuel pressure with a flow rating of 57 GPH". My fuel tank does have the cup at the bottom and a fair amount of baffling inside.

What year and engine combination fuel pump would work for this?

I understand I will have to change the fuel connections between the tank and the fuel lines to flared fittings to hold the pressure.

Will I have to change the stock lines?

Will I need to use a pressure regulator?
If so I would like to mount it at the firewall and use the existing return line.

Thank you all ahead of time for your help and suggestions.