we have put in an 02 4.8 in an 03 1500 and thats when i relizided the wiring harness want work the question is i relize that we need an o3 harness and pcm but the dbw is what im not sure of do i need to get all the components from the same vehicle and bolt it in is it gonna be a plug and play? 2nd will the 02 4.8 work with an 04 harness the truck had an 4.3 orignally i have many post here and i have no if this combo will work