I have a GER AOD. I had the GER converter also, at first, but I didnt like the converter. I would recommend the AOD tranny, but dont use the GER converter. I swapped in a stallion, and it performed much better. The tranny has been trouble free, and it comes with a revised shift pattern (which I wasnt expecting, nice surprise!). It is 1-2-3,4, instead of the factory 1-2,3-4. It shifts nice and firm when getting on it, but calm around town.
The Lentech is probably better, but costs twice as much. Let me know what you go with, and how it works out.
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1993 GT/AOD
'93 Mustang GT