NASCAR Racing: nascar car bodies, fender flare, car bodies

Question
do all cars regardless of manufacturer have the same profile

Answer
Hi there,

No, although similar, chevy, dodge, ford, and toyota do not have the same body.  NASCAR closely monitors all manufactures to tell that no one gains too much of an advantage.  the main difference are in the noses or front of the car.  There are also minor differences in the fender flare and rear end height, but other than that they are pretty much the same all around.
Hope i helped
Coy Jordan