Stock magnum efi under hood fit?

Yeah, you need to keep the PDC with the underhood harness. And, as stated, once you've stripped the harness down the only two wires you have to connect(other than grounds) are power to the computer and a power out(from the PDC) to the fuel pump. I have recently done 2 more harnesses( a '97 and '92) and have fired both motors that they went to on the ground.