I heard stock they run high 13's, but I saw a video of a QC with just intake and exhaust running 12's? Is that possible?

 

No, they had to have a PCM flash upgrade and probably at least a catback exhaust.

There have been several QC's run 12.7-13.0's with a CAI, PCM flash and minor exhaust upgrades.

 

I've got a question? Why worry. This is a truck. can tow 8900 #'s. And is weigh's in at a tad over 5600#'s. When I see the editors comparing the Z06R Corvette to the SRT-10, I think they are full of it. The Z06R weighs in at just over 3000#'s. Try sticking an extra 2600#'s to the Corvette. Now see how it performs. If performance was the intension. The SRT-10 would be nothing but a stripped-down truck. No frills. And weigh in at 4000#'s. Now take that to the strip.