It would be most helpful to determine Top Dead Center (TDC). You need to know when the number 1 cylinder piston is at its highest point on the compression stroke. Hopefully you know how to do that...I can explain if you dont...
Once you are at TDC, verify that the timing mark on the Harmonic Dampner is at the 0 degree mark or really close.
If that is good, take off the top of the ignitor housing and the rotor of the distributor will be pointing at the place on the cap that the number one plug wire should be attached.
Once you have that, the firing order is 1-5-3-6-2-4 and is COUNTER CLOCKWISE on the cap starting with the number 1 position you determined above.
I hope that helps, if not, post what you dont understand and I will work from there...
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!