I was going to post this, but you beat me to it. And for the record, Chevrolet can eat dust, if a Longroof Buick can beat a twin-turbo V8 Calloway Corvette...what a bunch of whiny bizzatches.
I remember an article in one of the rags (C&D I think) where GM did a Chevy Caprice wagon with all of the Vette hardware, even Corvette emblems, right around this same time.....
I'm not sure. It was only a 4 or 5 page article or so. I just found the pics online and a snippet of the car so I posted it. Shoot, I think I was in 11th grade and it was in our school library when I found that article.