Help with adding FiTech EFI.

[desert-rat]

So I called them up and they were speaking a foreign language. Current setup is a 305 with a Rochester Quadrajet. Research says that that is a 4-barrel carb. This is new to me for carb. So they mentioned part number 30003. I will need a 4 barrel intake manifold which is on there already. Which thing they start going into details about a high pressure fuel pump. Then they asked me if I have a mechanical or electronic fuel pump. I don't know. In the future I want to add an under the bed fuel tank. Then they start going into surge tanks and fuel Regulators. Now I'm just all confused. Then the guy says about buying an inline pump. For right now I just want to get the truck running and upgrade the fuel pump to i guess an electronic fuel pump. And then add under the bed tank in the future as an upgrade. So I added a couple pictures of the engine setup. Maybe someone can tell me what my engine is all about.