Just had a Mustang literally turn and run! Hahaha. We did one 50 pull and he immediately looked for the next turn out which just happens to be a dead end. Guess he didn't like his odds after the first pull 
Ya those gt are really not to much to worry about I beat my brothers 08 gt mustang before I did any mods
Depends on the GT. the 4.6 is weak, the 5.0 pretty quick.