Ok now for an update.
For the past couple weekends as well as a couple of weekdays after work; My cousin and I have been working on getting the truck wired up.
It turned out super clean. Ran it under the radiator and joined in at the rail from all then engine wiring and tail light wiring. at the left front rail. Ran around the inside of the drivers side fender and up through the fresh air vent. All hidden just how I wanted it.
After that. (or during) Got all the new lights and leses installed.
Now today. I got home a bit early from work. Started getting the Dynamat installed then I had to set the carpet and seat in there just to see how it all looked together.
Also pulled home a parts truck yesterday. Here's a link to the post of the beast.
The 67 GMC Parts Truck