Coils are already wired to the correct new firing order just wondering about the injectors if I need to rewire them or are they just wired up by bank and I simply just tell then the order to fire in.
You should have to rewire, just swap the connectors on the injectors that need to be changed. Hopefully you have enough slack in the harness to do so. If memory serves me right, the LS has a 4/7 and a 2/3 swap.