In cab gas tank venting

[Snake72]

Planning on reinstalling my original tank after a thorough cleaning. I have a 72 with the EEC venting and charcoal canister. I can remember this truck always having a faint odor of gas in the cab, worse on hot days. All the rubber hoses and clamps will be replaced, going to check for rust pin holes in the tank bottom but I think it's pretty clean for the original. Question is, I want to reduce the clutter and vacuum lines in the engine bay, the original charcoal canister probably hasnt worked correctly for years, can I just bypass the can and the vacuum lines to it? Can I take the vapor line that runs from the tank to the canister and leave it open to air under the truck?

I'd like to get rid of all the EEC lines and use a vented gas cap but have heard of gas spilling out and down the side of the truck with right turns, obviously dont want that. I don't really want to get a new charcoal canister, but don't want gas fumes in the cab either.

And I know a rear gas tank would solve these issues, but trying to retain stock tank.