Mark,
Great piece of work. Lots of fabrication in that one. I never paid much attention to the IROC racing as it was after I had a family and didn't have much time to think about race cars anymore. I just finished reading a book 2 weeks ago. "Unfair Advantage" by former race car driver Mark Donahue. Donahue worked for/partnered with Penske for many years. Mark had a degree in Mechanical Engineering and was extremely valuable to Penske as he knew how the cars were built and how everything worked and could fine tune it just from driving the car a bit. The amazing difference just a very minor change in the camber of the front wheels could make was just astounding. He had a close relationship with Chevrolet for a long time and used the Chevrolet engineering people to design lots of different things especially the engines. He drove in the IROC series and raced with Bobby Unser a lot, and thought he was a fine gentleman and great driver. They were team mates often. That book is a great read if you can find one, I learned more about IROC there than anyplace else before. Sadly Donahue was killed in a race car accident not too long after that book was published in 1975.
Again great job on a very special car.
MB