If you ran quicker in your GT than you did in your Mach 1, then it was by a miniscule amount at best. The cars as stated over and over and over again are too close performance wise to really dedicate a winner one way or the other. To suggest otherwise proves ones ignorance more than anything. Making a statement like "made my '04 mach 1 look like a toy, even when it was stock." insinuates that your GT
MURDERED your Mach 1. And if this is the case, then the only logical conclusion one could derive from this statement is that you couldn't drive your Mach for ****.
The S197 tends to be the easier car to get out of the hole between the two and as such the "seat of the pants meter" may fool owners into thinking the GT the quicker of the two. But the Mach's torquier bottom end and top end charge seems to make up the difference between the two by the time they get to the finish line in any case.