To all saying it's the high TQ that kills a motor, you are correct, BUT.... Horsepower is simply a function of torque at xxxx RPM. More precisely, HP = (TQ x RPM)/5252
Also, F.I. has done their due diligence and it is just paying off for their customers, that's all. Nobody truly knows the limits of the stock block until a kit like Tony's meets a Specialty Z tune and the clock ticks forward. Haters gonna hate.