I built a model of this car and it is the Virginia Transportation Museum in Roanoke. They have a wing dedicated to Curtis Turner there.
The story on this car, so I've heard is Smokey did modify this car quite a bit. It was before NASCAR used templates to verify vehicle profiles. Smokey being Smokey he had a stock Chevelle modified to match the race car placed in the parking lot. When NASCAR questioned the profile of the race car, Smokey led them to the parking lot and pointed out his planted Chevelle and let NASCAR measure it and compare to the race car...no problem!
Curtis Turner did race this car, but he had a big accident and totaled the car. After the race, Smokey said that this was his last car he would build for NASCAR because he didn't want to build the car that killed Curtis Turner.
Both Smokey and Curtis were both a couple of characters making NASCAR fun in the 50's and 60's.