Only because I need the kit now (for my car), not for something available in the future.
Also, I've found (from other cars I've modded) that simply controlling for detonation and avoiding abrupt acceleration the drivetrain will handle the torque just fine.
I agree that if was going to run the quarter mile in this thing then I will get into trouble with the transmission, and possibly the axles over time.
All I want is a better handling version of what I have now.
I am looking at about $4 to 5K for the whole system with install. It's not that big a project.
Garrett