Lost Overdrive in my 1990 Cougar!!!
 

I'm in the Metro Detroit area.

Does anyone have a 1989-1991 AOD?

Any parts cars out there?

Any ideas for a quick fix? Ahem, yes, I know it's a transmission, but a girl can dream can't she? :)

This probably isn't going to work for you, but if you are desperate, you could try a transmission additive. Just follow the steps on the bottle and see if it works.
http://www.autobarn.net/luc10009.html