Yes.
There is no OBDII connector on 1993 F150. Didn't start until 1996 (97 model).
What question
on the top of the differential
yes
Mercon transmission fluid
6 quarts
yes it will all u need for it to work is have the ecm for the HO
the tail shaft of the tranny on the speedo cable
33 millimeter
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Behind the glove box.