Fuel Tank Stuff?

Hi,

I'm in the middle of rebuilding an 80 CJ7. I have removed the body and prepping it for painting. I notice in the drivers side rear corner that there is a 'Vapor/Fuel Separator' and a 'Roll Over Fuel Cut Off'.

Does anyone know if these things are really needed?

Can I remove them and still be Smog Legal?

How could I vent the fuel tank if they are removed?

The vapor separator goes to a small tank on the firewall. When I removed it, it basically fell apart/broke. I noticed several vacuum lines also attaching to it.

Does this tank need to be replaced?

Thanks!
Kevin
80 CJ7