Yes San Luis is So Cal...upper So Cal, then comes Middle Cal and Nor Cal...
The truck is not a Duramax...he took off all his badges but I know its not because I heard it when it pulled up (Give me a break, I was eating Subway for dinner in the parking lot!)
It had this cool feature I really liked tho...he pulls up with his fronts down but then after he got out and helped his GF get out of the front seat he pressed lock as he was walking away and the fronts rolled up all on their own!
Oh yeah and the pipe is big becuase its totally custom, and so that (in this case) has nothing to do with it being a Duramax.
But man the kid was like 17 years old and he's got this big ass truck...lucky guy