Thanks for the wheel spacer info. I will contact "MotorsportTechnologies". The Z06 uses a staggered wheel setup, I am thinking that the rear may be a bit too wide. Although I am able to pick up the wheel/tire and test fit them, prior to purchase. So, that is a bonus.

The truck will end up with a 4/6 drop. The rear is done. I wanted to get all that done while the box was off, during the installation of the new fuel pump. Plus needed all that done prior to taking the new driveshaft dimension, it was stolen as well.

I will start tracing and marking wires you have mentioned tonight. Wish I could find someone local. I would throw it on the trailer and drop it off. BUT, what fun is that. At least I will know exactly what is what.
I really would like to splice the two together. But for simplicity (as you said) I will probably go with a new stand alone harness.

Thanks, and I'm sure this isn't the end of my questions. Yep, just the start.

Jon