Proof? There's several tests going high-13s to low-14.
Or should I find proof of a car with a chip like you did?
What car with a chip are you referring to? The provide link was a drag between a stock GLHS and a stock Gran National.
As far as proof, quit saying that the Grand National was able to pull a high-13 and provide some links. I present my side please show yours.
A lightly modded 1986 GLHS pulling a 13.2 sec quarter;
http://www.dragtimes.com/Dodge-Omni-Timeslip-1054.html