AOD is mechanically controlled, you will have a TV cable from the throttle body to the tranny. AODE is electronically controlled and you will have wires going to the tranny (more than just to the neutral safety switch).
AOD shift selector has 1-D-OD pattern
AODE shift selector has 1-2-D pattern and an electrical way of locking out OD
As far as physically from the outside of the tranny, I don't know of any tell tale signs, I haven't looked at the side by side.
BUT as mentioned already, your 93 has an AOD
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