Rumors flying! The LS7 makes 505...not sure where people are getting these ridiculous numbers.
However- the z28 comes with four way shocks and R-comp tires from the factory, so it will of course be faster on a track than any stock Mustang, if for no other reason than tires alone. It will still weigh 3800 pounds though.
If you want to go faster than a z28, you take a GT and put 10 grand in it in tires, wheels, brakes, coilovers, and boltons, and then you go get your point-by.
2002 C5 Z51. MCS 2WNR TT2 coilovers, 18x11 Forgestars, 315's, yada yada. Built Z06 T56. Bolt ons. Coming soon to a CAM event near you.
2013 F150 6.2L. 9mpg.