I wasn't attempting to make it correct for the car, I know that tunnel ports weren't offered in mustangs, I was trying to make it correct for the engine. My chrome pentroof valve covers don't have any openings for a PCV or an
oil cap and I hate to have to change them, plus as you said, the
oil fill tube is handy and looks "correct" to me on a 427. The fuel line I removed was a conglomeration of rubber hose and hand bent tubing so I don't want to go back to that. I guess I was just trying to find out if anyone has an FE with 2X4 induction and an
oil filler tube and find out what worked for them. Thank you for the reply, I'll figure out something that works.