I spent the day at brenspeed today for there annual dyno day I watched as 35 - 40 mustangs 1 after another went on to the dyno and only saw maybe 10 that broke 300 horse and only 3 that were over 500 hundred horse 2 of which were super snakes and 1 was a 03 cobra modded to the gills. That said I saw like 8 stock stang gt make there way up and like only 2 were above 225 horse. My car has a 110 mm jlt intake a 62mm gms throttle body a brenspeed 93 tune headers and off road x pipes and violater exhaust. My car only came in at 299 peak horse after 3 pulls on the machine. How does ford get away with saying that the stock 05-09 gt is 300 horse when in fact it is not even 250 ? Where do they get there numbers?