Wiring harness on a 4.8 should work on a 5.3 and 6.0 depending on year.
The only issue is drive-by-wire o drive-by-cable.

The PCM will work, but it will need to be retuned for the larger engine. Plus it takes advantage of the power, as i just found out.

There is a tutorial at the top of the page on motor swaps.