Thanks Alex & Lynn.
Ed, the body I am working with is 1/14 to match the big rigs. The metal bodies I saw were 1/10. Did I miss something? Doesn't seem like there would be money in making a niche 1/14 silverado. None the less I am already committed to the styrene shown here.
I have the roof on now and another layer of styrene on the doors, but no pics yet. The first coat of filler and sanding to start soon. I was hoping to get some frame rails cut this weekend but wife's birthday bash for 60 or so people is on Saturday so I probably won't make much progress on those till next weekend.