The Vette is an auto, and it's not a Z06. Bone stock. Also, the GT500 couldn't run him down, only trapped 113 or so to Jay's 114. Both were on street tires. With his exhaust modded, and a hot computer tune from us, plus some stickies we hope for high 11's.
We're friends with the GT500 guy, and yea, he needs tires. But, if the MPH isn't there he'll never catch the 'Vette, so it has to happen in the 60'. The 500 may have 500hp stock, but it weighs in at 3900 lbs sans driver. The 'Vette is 3200 with driver and has an underrated 430HP. The price tag minus the aftermarket stuff on the 500 is nearly identical.
As far as my car, it ran 13.8@102 bone stock with a 3620lb race weight with my big ass in it. at a corrected D/A of 3400ft. In the vids, all I have is a cutout, lid, Tune,
K&N and gutted cats. Stock 245/50R16 radials, and best of all, 2.73 gears out back cutting a 1.9 - 2.0 60'. I've since added the 224R cam and working on a Yank 4K stall, 3.73's and some M/T E.T. Streets. Hoping for high 11's, till I blow my junk 7.5" rear.
These are just my experiences, nothing else. I've owned a modded 5.0 and 4.6, but could never produce a low 13 sec slip with either of them. Both had more mods than my Camaro.
Edited to correct some punctuation.