NMRA Factory Stock class...how fast are they running? 11's. Pure Street? 10's. Real Street? 9's. Simple combos, tuned very well, with TRACTION.
Someone was joking around in another thread a while back and said, "What does a 300HP, 500HP, and 700HP Supra have in common?"...A 12 sec. time slip. Not many have traction.
Most street cars don't have traction. Especially, street Mustangs. They'll blow the tires off at a 15mph roll...cool in the parking lot at the local high school...not cool in a race.
Ford engineers designed them that way so they aren't at the dealerships with blown-out drivetrains. Too often you see sigs with blowers, H/C/I, gears, a long list of mods...then 1.8-2.0 sec 60' times...
Often, once the rear control arm GEOMETRY is changed to match the instant center of the car, the vehicle will launch like someone hit them in the @$$ with a truck.
Suspension, gearing, tires, and of course, good driving.