When my motor gives out or maybe even before I want to know what all envolved in changing it. My questions. 1. will the computer out of a v8 truck hook up to the factory harness or do I have to pull the harness out of the other truck? ( is the harness sepreate from the rest of the main harness? ) 2. Is it legal to change a V6 to a V8 due to immisions and inspection? 3. should bolt right up to the tranny right? If all this is possible then it shouldnt be a big deal to swap it out. Just curious I dont want to end up starting this project and then be screwed because of it not being legal or being stuck on something that I didnt have plans on.