You will pull the 5.3 and put the intake, balancer, pump and all of the front accessories on the 6.0L.
The swap is pretty easy and everything will bolt right up. No extra parts are needed.
The 5.3 may run ok, but may have some hesitation and not run like it will unless you get the pcm tuned.
You'll need antifreeze, coolant and a filter.


good luck and keep us updated,

allen