I'd go obd1 P72 as well. However, you will need to wire a knock sensor. If you have a b16 head, or a GSR head with skunk2/jg manifold, a DOHC converted P28 might be a better choice.
__________________
2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget