Mine came with generic fuel pump instructions that didn't tell which direction was the fuel flow. Which side is the inlet and outlet?

• What size are the barb connectors on this pump (1/4, 5/16, 3/8)? fitment
• Is this the only pump you need to run stock efi, or do you have to use a high volume low pressure pump to pull the fuel availability
• Will this work with the Edelbrock Pro-Flo 4 sold here. fitment