One thing to remember... LTDs and Grand Marquis had column shifters, so attaching your stock shifter is a bit more involved. There is a procedure for flipping the shifter mechanism inside the AOD to make it the same as the console shift, but I don't know the details. I used an AOD from an '89 Grand Marquis and didn't know about the shifter issue. We got it working, but it's not quite right... Next time I have the pan off, I'm gonna fix it.
Hope this helps.