Yea man it will be a direct swap..if would be easy if you could find a PCM from the same guy he sells em for 50$...he might even have the one that came with the truck you could use it because it would already have toe 5.3 settings...or just get allen to send you one and send yours back during the swap...
You could easily sell you 4.8 for what your getting for the 5.3
OH crap forgot to mention!!
Your oil pan will transfer over
Shit your already ready to go!!
Dude your basically getting a free engine haha in the long run..
[/b]