Firing order and spark plug wiring.

I removed all the plugs and made no attempt to record which wire goes to which cylinders. I also made the mistake of removing all the plastic clips that keep the wires all spaced out and organized.

Now, I have three wires. They're labeled 1, 3, 5 on the side closer to the ignition coil.

I want to confirm the layout of the engine.

Looking at the engine from the front of the truck, the cylinder are:

REAR OF TRUCK
5----6
3----4
1----2
FRONT OF TRUCK

Is this correct?

If so, I'd also like to make sure the cylinders are paired to fire properly.

I got 1+6, 3+2, 4+5. Is this correct?