Let me start by saying with a C4, there is really no driver involved...
Also that is FAR FAR from a stock motor. Also read some of the things he says, Production block with a stock bore. He could have offset ground the crank, maybe some lightened rods, maybe a hone and re ring (this is worth some power, from what my car showed) who knows what else. Now add in the fully worked E7s (again stock heads, but they can be made to perform), a ported Ebrock intake, cam, all the bolt ons, a built C4, and suspension. The 11.9 sounds about right or average for a car built like that.
There have been plenty of fast E7 cars, but most of them were from back in the day, and they werent plastered on the internet but sitting in guys yards.
A friend of mine had a 331 stroker, carbed car with hogged out E7s and went 11.2 all motor, with a stick shift.
After that rant, clean looking car, just needs a 5-speed to be something real nice!
EDIT: this is his car...