The modular motors and these new 3 valve ones, all respond very well to gearing. With 310rwhp, Bob Cosby ran 11.60's in his 99 cobra, stock engine with bolt on parts, naturally aspirated, with a solid rear out of a GT and 4.56 gears. Basically the same combo that I had. The new mustangs are a little heavier, but have a stronger midrange than the older cobras. Add a blower with 12psi and its easy to have over 500rwhp and run low 11's. As with any manual trannied car, you need to have a dialed in suspension, sticky tires, and be a good driver to see any good numbers out of them. Your typical Joe on the street will be lucky to run a high 13.