im stumped. have an 84 GN runnin good. As i look through haynes and other car car manuals they show the firing order different in each book. WHY? If the previous owner put the coilpack from 86-87 would it be different? the numbers on my coil dont match up to the cylinders but if i go by the diagram on this site it runs good but WHY dont the numbers match and Why are the other manuals so far off? just wondering if anyone has seen this before.