I love when somebody recognizes my C8 as a Callaway, and not just some Camaro with a body kit. The car is indeed the first complete C8 ever built, as the silver Motor Trend photo car was not actually a C8, but a Camaro with the Aerobody kit. I beleive it was PD's car, and now has a SNAT.
This car has several one off parts, such as the fiberglass honker, and the machined C8 valve covers. This engine was the one photographed for the C8 brochure.
The magazine that it was featured in was the Nov 94 issue (#100) of Sports Car International. You can order them directly from SCI
There is some confusion over production, but it looks like 16 C8's were built over the 3 years, with 9 of them built new as complete cars.
I had a blast driving it on Power Tour 06 and 03. I took a 95 SNAT T-Top Camaro on Power Tour 02(sold it for the 94), a 96 SNAT Coupe (only 96 A4) in 05, and I had the 94 vert, a 95 vert, and the 96 coupe all displayed in a row in Gainesville. I also saw a 1987 TT #2 at the track, but never saw it again for the rest of the tour.
I will try to upload some video of the Callaway on PT 06