Nice score! It definitely looks like you've got your work cut out for you though! I can't think of anything you're going to get as a donor with a full frame aside from a truck or maybe a trail blazer. A trailblazer SS would be cool. You'd have an all wheel drive party mobile. The F bodies are uni body as are the Vettes as far as I know. Some Impalas had them but again, no full frame. To get what you want may require 2 donors. Or just get the early E lcamino G body and then get a 5.3 and 4L60E out of a yard or CL. You can usually buy them for under a grand these days.
.