Converting EFI over to carborater?

i have a 78 cadillac seville with EFI system and i want to change it over to a carb. i knowq i will need a intake and carb. but what will i do about return lines to gas tank. and i know i will need a manual fuel pump also, can anybody help me else am i missing any steps any body else with suggestion im open to... show more i have a 78 cadillac seville with EFI system and i want to change it over to a carb. i knowq i will need a intake and carb. but what will i do about return lines to gas tank. and i know i will need a manual fuel pump also, can anybody help me else am i missing any steps any body else with suggestion im open to anything that helps thanks in advanced
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