I figured I would try to contribute something to this board so I'll post it for reference. I chose to run this setup becuase of how complete it is and what it will accommodate. I could not find a GMC specific kit and seeing as how the truck is pretty much a chevy now except for the dash and front end this will have to work. The wires are labled every 5 to 6 inches and the instructions are very detailed and make it easy to follow. I am currently prepping the floor and firewall for some POR-15 then Dynamat before I start rounting the wires (dont want to do it twice). I have removed the old harness and the grommets were as hard as a rock but a mini torch made quick work of it. I will post updates as quickly as work permits. I have never done something like this so any pointers or tips are appreciated. Ask any questions you may have and I will answer them as best as I can.