Mechanical grip will matter. If a car is going as fast as it can into and tracking out of a corner - additional speed (HP) will not be applied until pretty much straight and stops again the moment you touch the brakes. Just saying that 20hp one way or another could be the least important thing if comparing these two cars on a track.Agreed. Am sure we'll see some direct comparison tests next year. Mach 1 HP Auto vs. 350R, the Shelby should still have a leg up in the corners, whereas Mach 1 vs regular GT350 should be pretty close. In a straight line, Mach 1 Auto should beat both.