Just came across this yesterday, so thought I'd bring this subject back up.
While looking through my most recent
Peterson Manufacturing catalog, I came across
part #95031 Ford replacement antenna. From their description:
"32: single mast polished stainless steel mast
Direct replacement for '73 to '91 Bronco...
Then it goes on to list several years of LTD, Capri, Crown Vic, Continental, T-bird and Cougar.
Not sure about the cars, and it does also say "fits any vehicle with flat surface that fits a Ford-style base, which is strange, but in the picture it's totally an EB angled flange base. Looks like it should work perfectly.
The main difference I see between it and a factory EB model, is the lack of the underneath bracing that bolts to the body for added support.
Might be worth finding a PM distributor though, and taking a closer look.
Haven't checked out the website yet, but in case someone's interested, it's
www.pmlights.com
Paul