This is what I started out with a while back - '87 GMC the PO had totally re-badged into a Chevy, with a 50 foot'er paint job and blue interior:
I wanted something a bit different, and, while it's not done just yet (and it's pretty dirty), this is the direction I took:
Oh, yeah - that nasty chin spoiler was reinstalled by mistake, and is coming off...
Jerry