I feel a drag race coming on....

Having trouble with a pesky chevy guy at work....again. 2007 or 2008 standard vette running stock tires with a six speed and a supercharger. Supposedly made 515hp at the rear wheels after the install this winter. A little friendly jousting and one brief on road encounter led to me inviting him out to a test and tune in May. My car runs 12.00-12.20 at a 113mph on a good day, do you think I stepped in it this time?