If it were me, and not going with the original computer controlled engine, I would go with a new abbreviated engine wiring harness's from one of the aftermarket wiring specialists. Like Painless Wiring or Ron Francis, ect.,,,,,,
Carefully remove the factory engine wiring harness and the computer and store them just in case at some point someone may want to put the car back to stock configuration. Doubtful, but you never know.