@ Roadhawg- Hope this helps you out as well-
I met a gentleman whose screen name is "Gator" over on Randy Ayers' NASCAR Model Forum who produces Vacume Formed from Polystyrene Sheet. His work comes highly recomended and look VERY nice. His prices are more then reasonable. You can look him up and contact him thru that forum.
Not sure how different working with one of these bodies is as opposed to a resin. Looking at his pictures it appears like they will be a little more clean up around the windows and wheel openings then some resin bodies I have got in past but then again his prices are better.
I havent ever had a vacumn formed body before but I figure I will place an order in the next week or so and give it a whirl. From what I understand Fred's Resin is still closed due to health issues and he is the only other I found that produce this Camaro body. Big Donkey produces wheel, old coupes and such but no bodys like this.