You are likely talking about the 300 mph land speed car, not the street car....which was same color as yours.
The 200 mph small block
Banks Power | Super Trans Am
A few years later there was a 427 twin turbo F Body that was reported of doing 240 mph and that is when Gale Banks decided on a salt car. Now look at what he is doing with diesel power with out all the sooty exhaust.