Please don't rip me a new one, but....

Anyone here have experience in swapping a 4.7L out for a LA engine in a 2000 Durango? Not worried about any of the electronics, just drive train issues.

It's 4x4 which i don't want but i can deal with that part later. It only has 37k miles so show room condition, but the engine dropped 2 cylinders for some reason?
$500 is her asking price.