Maxwell,
Stock LS1's with bad drivers are not all that quick, especially the 6spds. With a good driver, a stock LS1 would be similar to a stock SRT6 I would assume.
The car I raced was not stock, had drag radials, and was launched hard...but I caught him sleeping on the tree and got him in the end. He was running me down, though. He definitely had full exhaust, and I think it may have been cammed. 6spd car.
The mustangs were a full 1-2 seconds slower...not even a race. There was one out there (3v 4.6) with a blower - he was quick but I never lined up next to him. He could easily win if he shifted/launched right. He was laying down 12.80's, but throwing in a few 13.4's in there also...so I MAY have got him
There was a C5 z06 that I was within .2 seconds of. He had exhaust for sure, not sure what else. Best I saw out of him was 12.9.
All of this is on the track. The only car I messed with on the street was the Exige.
SQ