I just spoke with Yury and was told that this harness will support all S13 SR ECUs (62, 63, E4, E5) without modification. However if you have a J4 ECU (late model blacktop s13), then a few of the pins need to be changed.
Details of the harness from Wiring Specialties:
S13 SR20DET into S14 240sx Harness Combo FREE SHIPPING
Thanks.