the mod motor in the new mustangs are all top end. i will say they are somewhat disapionting low end and are the opposite end of the spectrum of the 5.0. i got my bullitt into the 13s bone stock so i consider that pretty damn good also the new cobras are low 13 sec. cars right out of the gate. in order to realy test the gts performance you need to get it up past 4500rpms and i bet it will but you in the back of your seat.