 As the story goes they built 351 extended “D” nosed cars; parked them in the front and on the edges of a parking lot; took 152 regular “W” nosed Cyclone Spoilers and parked them in the middle of all the Spoiler IIs in the parking lot.When NASCAR counted the cars they just never looked closely enough at the cars in the rear!However, it must be known that the Marti Report states that 503 Spoiler IIs were manufactured."