bolt on ls1 vs bolt on 4.6 stang

Those are pretty much the best times people run in those cars…for those times it had to be perfect weather and track prep. I know I heard of some 12.6 stock cobra’s but most are 12.8-13.1…mach 1’s I see a ton are 13.8 or so…but I have seen a few run low 13’s, for the 01 GT most I see stock (I guess you can call them stock since everyone I have seen has flowmaster) run around 14.0-14.5. But is your times are legit I give props that is getting everything out of those cars for the most part. (in pgh)