Whelp in an ideal situation the F1 can theoretically run around 9.30 @ 154 mph. The GT500 will probably weigh in around 3900-4100 pounds so figure the lighter of the range (3900 lbs) the best its going to muster is a 10 flat @ 142.
Granted this is just plugging curb weights and horsepower into a calculator but it is…