I had a guy contact me on Cardomain just now and tell me I could use a Fox Body LTD/Marquis fuel tank in my car. He says it's the same as a Fairmont/Zephyr tank, only it's set up for fuel injection. I had thought that might be the case, but wasn't sure until now! So, I thought I would pass it along in case it helps anyone here!
Looks like we need to hit that all Ford junkyard, Eric!
It's just kind of a shame in my case because i got rid of the Zeph filler neck and straps, so I'd have to buy those again!