The only risk I see is spinning my Z to 7000 RPM and having the fan fly off. Or having a 20 year fan clutch give out. Just about every new car has an electric fan. What's so risky? Nitrous is risky too if your installation s poor. I guess there two type of people in the world, efan lovers and haters.
I will say that If you dont know how to do it right then stick with the Z as designed.