[EagleChief]

Whew! That's a lot of info in a short amount of time! But, I appreciate the help, fellas, and that's what I'm looking for! Thank you for all of the input.

The first 2 things that jump out at me: 1) what is the tac module? and 2) what is the VATS that I keep seeing pop up when people talk about the ECU?

I'm leaning towards buying a harness that is already done. That way, I can get rid of a bunch of the crap wiring that's in the truck now. I mean, I have a wire (I think the starter wire) that is spliced 3 different times between the firewall and down below the engine where I lose sight of it. It's purple coming out of the firewall, halfway across the firewall, it is spliced into a black wire, then down on the passenger side, it's cut and spliced into a red wire. Which, I know is "ok" as long as the wire gauge is correct and it's connected good, but, still... that's just trouble waiting to happen.

Is the '04 year a DBC or DBW? Also, I want to go ahead and start purchasing parts, but do I need to wait to see what motor I end up with? Or, can I get things like radiator, engine mounts ahead of time?