While not a Trans Am race, here is a picture of Stirling Moss in the drivers seat of the one of one 1968 Camaro Z28 convertible that was used to pace the 1968 SCCA Can-Am event held at Road America in Elkhart Lake, Wisconsin on September 1, 1968. I found this picture in the program for the 1969 Road America June Sprints which is currently for sale on Ebay. You can see an additional picture of Stirling and the car in reply #26 on page two of this thread. Jon Mello provided the color picture of the car that shows Denny Hulme in the backseat on his victory lap around the track. I believe he mentioned he found it on Ebay. The car still exists and the owner has recently applied the Road America Can Am pace car decals to it while displaying/showing it at automotive events. The third picture shows the car on display at the Elkhart Lake, Wisconsin Concours held in conjunction with the WeatherTech International Challenge with Brian Redman presented by HAWK vintage event at Road America on Saturday, July 22, 2017. The fourth pictures shows it on display at the Muscle Car and Corvette Nationals held in Rosemont, Illinois on Saturday, November 18, 2017. I took the 3rd and 4th pictures.