ECU to carbs on a Chevy 350 block

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How do. As per my thread in the noob bit of the forum, I want to switch from the ECU I have in my Vandura to carbs and big pipes. I'm at a loss as to the advance and retard, timing and fuel pump with a swap like this. Never touched a V8 before, so no idea what I would need to change out.

Can anyone hep? Recommend a carb? Do I need to change / mod the dizzy? Fuel pump?

Thanks in advance!