Well, it seems I've got an EEC tank, but without the EEC.
Does this look like a replaced tank? That's what I'm thinking because it's pretty clean, no rust.
Here are some pics:
There's also no charcoal canister, and no evidence that there was one.
Also, it's got a vented cap off of a....Ford

The PO put that on, I'm going to find a factory one...
Thanks!