That looks like a v6 to me. Not only the fog lights, but the rims do not look like GT rims. Most GT's that year with the smoked headlights, had the bullet rims which are dark. You can tell the rims in the video are pretty bright. Also, I don't see a GT symbol on the side...I doubt it was an 04 with the anniversary badge. Those v6's had those backword hood scoop things. (The scoops point toward the windshield)

Besides, look at the outcome of the race. That just tells you right there it was a v6. I don't care if the car looked like a saleen...

Whatever it was, good kill.

By the way, the mustang was an auto wasn't it?