First, let me say Thanks for everyones help especially Torrie, Kendall, and the GT Guy for being able to hook me up with some! I was finally able to get some locally but here's a synopsis of how it all transpired.
Dealer #1 Sorry we don't show that part number. you have to use 75-140 now and add an additive
Dealer#2 Sorry, that fluid is no longer made. Use 75-140 with additive
Dealer#3 Sorry, that's not available anymore and I don't know what fluid replaces it. It's not in the computer or in the book. You have an expensive car and I wouldn't want to give you the wrong fluid. Sorry
Dealer#4 It's not made anymore, can't help you
Dealer#5 (See dealer #1)
I call back dealer #1, here's our conversation
Dealer: Hello, this is Tom
Me: Hi, I called earlier about some transaxle fluid and I spoke to someone that could not locate it, was that you?
Pause...odd silence (15 secs pass)
Me: Hello, is anyone there?
Dealer: (Finally) Yes, what do you need?
Me: Since you can't locate the fluid, can you please give me the number to the area Motorcraft distributor so I can talk to them myself.
Dealer: Why do you want the number, the fluid isn't made anymore.
Me: Maybe it isn't made anymore but I know there's got to be an old supply of it somewhere that hasn't been used. The GT is only 3 yrs old and I doubt anyone has even changed their transaxle fluid yet, so you can't tell me that previous stock would be all gone. I know someone has it.
Dealer: The distributor won't sell to you anyway
Me: Well, that's the fluid I want and I won't use anything else.
Dealer: Just give me your number and I'll call them myself.
Me: OK, 555-DUMY
Dealer: I'll call them and if they have it, it'll be a fluke
(OK I'm a little perturbed now)
Me: A fluke? What do you mean by that? Are you telling me that just because it isn't made anymore, that they would throw their remaining stock away?
Dealer: (Complete silence and ultimately no answer)
Me: Look, I'm not trying to be difficult, all I know is that the owner's manual specifically states using this exact oil. The bottle I have even says on the back, "Designed, engineered, and recommended for use in the Ford GT transaxle. It's an expensive vehicle and I'm not going to put anything else in it except what's recommended.
Dealer: Ok, that's fine (he kind of chuckles) I'll call you back.
15 minutes later......
Me: Hello, this is Jeff
Dealer: I got the oil and already ordered you 5 quarts which you can pick up tomorrow.
Me: (Biting lower lip, wanting to say "So was it a fluke?") but instead say, "Thank you, I'll pick it up tomorrow. Goodbye"
So, I still don't know for sure if it's still being produced or not. I just know that he got a hold of some and I'll be able to drive my car again.
LESSON LEARNED: Don't drain your transaxle by accident when doing an oil change!:thumbsup One of the most stupid things I've ever done! DOH!