Clean up the motor and compartment

[84 400]

Guys sorry for this question i am having a blank in my memory. I put on the Edelbrock 650 cfm thunder carb a while back and the halve covers came with a hose that conects to the front of the carb. like a pvc valve. What is the purpose and do i need to keep it? the valve covers are just cheapo pep boys ones if i remember right. Thanks.

I really need to clean the engine compartment up a bit so it looks less cluttered. any suggestion for all the wires on the intake? and others? Also i am gonna order a braided ss Fuel line kit from pump to carb from sumit and a diffrent filter.