Glad to hear you are finding some things to help you out. Here is a shot of the '68 Daytona 24hr pace car (SS396) with actor James Garner driving and Nascar boss Bill France in the passenger seat. In 1968, the Daytona 24hr race was part of the Trans-Am race schedule. The upper body color is red, if I remember correctly, and the car does have a rear spoiler (although it is cut off in this photo). This car still exists.