Need a hand identifying...

I have a spare a904 I'm going to put in my 66 due to the one in it failing over the summer. I'm trying to figure out what year it is so I can order the proper shift kit for it.

Now I've done my internet research and I'm having a really hard time finding any information on this particular trans. Here is the info I dug off of it:

Off the driver side casting above the pan rail: 2466948-2
Off the driver side pan rail itself: 22(double stamped)801534Y 2558611

Can anyone give me a hand figuring out what year this came out of? I've looked on [ame]http://www.mymopar.com/downloads/transguide.pdf[/ame] already and it's not listed there and Google is failing me tonight.

Thank a ton in advance. I look forward to hanging around here.

Ant