firing order 1-8-4-3-6-5-7-2

I have a 71 Duster 318V. I decided to change the plugs and as I hook up the wires it appears to me that the 7 and 6 cylinders are reversed.

The car has been running really nice. Is that possible with the wires hooked up incorrectly???

There is no chance that I mixed them up this time as all the spark plug wires are still in the looms and 6 and 7 are on opposite sides of the engine.

I am going to turn the engine by hand and make sure that the cap is at the 1 position and track it back