Be aware that not all computers are compatible with all harnesses. Example a 91 computer will only work with a 91 harness. 87-90 are different as are 92-93. Get them from the same car if you can.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.