Thanks to zieg85 for the info on the panels. I found the truck posted on Craigslist.
Ironically, I'm currently living in KS and the 78 is setting in my hometown in IL. I called the guy and I had my brother pick up the door panels, dashpad, and headliner from the 78 yesterday. The guy was actually cutting up the truck yesterday, loading it up on a trailer to haul to the scrap yard. He let my brother have everything for free, it also helped that my brother just changed the guys tires yesterday also. It's funny sometimes how things work out with the help of the Internet.
So when I do get these panels here to KS within the next couple months, my intent is to get some pictures posted if the panels fit or not.