I can finally reply!
Thanks guys, it was a close one due to me falling out of boost once I got into 2nd. I had him out of the hole by about half a car which surprised the hell out of me since most cars at his power level don't go anywhere on the street off a launch, but I guess that 345mm tires do help! He ended up passing me by about 1.5 cars by the time I got her going into 2nd gear then it was a catchup game and by the top of third I was neck in neck with him, and in 4th gear i started walking away slowly!
Not your regular viper by any means, I ran 11.6@121 on pump and 1.75 60' in full street mode a few weeks after that race. I would estimate that viper at somewhere around a mid to low 12!