13.12 1/4 by bone stock G8? HELL YES!
https://ls1tech.com/forums/pontiac-g8-2008-09-chevrolet-ss-2014/891619-stock-pontiac-g8-gt-13-39-104-7-a.html
Here is another one running the 1/8 mile. Seems to be a little more in line considering they're dynoing around 300rwhp.
https://ls1tech.com/forums/dynamometer-results-comparisons/890007-my-g8-results.html
stock dyno:
http://www.g8gttech.com/showthread.php?p=29#post29



