Would there be a build sheet hidden somewhere on a 1997 Town Car ?
If you Google Marti Report you will find the man who bought all the paperwork from Ford from the late 60s forward. Its not to bad of a price and you can get all the info on the cat. I just got one a few weeks ago. Took 4 days. Here's the opening page. Tells you a lil bit about it. I've Google, used Tor browser for the dark web and can't find anything. This fella has all the info.Unfortunately I don't think so. Best bet would be to contact Ford head office and inquire if it could be found in the archives or the location it might have been on the line. The only thing I could think of would be underneath the rear seats.