If you decide to use the OEM harness it should be the '89-'93, as there were several changes and extras in the later 5.0 Stangs. They are not pinned for the A9L anyway, would need some wiring changes, or the '94-'95 computer. Just get the EVTM for the year harness and start wiring. Also don't be afraid of the A9P automatic computer. A few over on the Corral say they run a little better, but most say there is no difference.
Oh yea, what engine do you have in your Stang? The HO computers are setup to operate the 13726548 firing order. Could get around this with some wiring changes.
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1988 Turbo Coupe...5.0 Conversion... AOD... 3.73s
NA 13.11@105.32....W/90 Shot
12.23@112.19
<font size=-1>[ This Message was edited by: TurboCoupe50 on 1/16/03 6:21pm ]</font>