Therefore, the firing order influences the numbering, but the *physical* cylinder numbering goes:
1-3-5-7 (Driver's side)
2-4-6-8 (Passenger's side)
Keep in mind that this is the *physical* cylinder numbering. The firing order is a different sequence that describes the order in which the cylinders ignite. You'll need a workshop manual or reliable online resource to find the exact firing order for your specific engine displacement (4.6L or 5.4L).