So the block is a Windsor 302 out of a 1993 Bronco and the trans is essentially gonna be an M5R2 out of a 1993 F-150 (its really out of a Bronco but because Im converting it to RWD, It will be the equivalent to one out of a RWD F150). The heads and intake will be from an 89 Mustang (GT40/HO). If I grab injectors, wiring, emissions equipment and an ECU from a manual 89-93 5.0 foxbody, would I need to modify the programming on the ECU at all? Even though the bottom end and the transmission, while technically different are very similar? I mean, OBD1 is rudimentary but is it that rudimentary?