I have spoke to Roush about these kits.
Roush was testing durability / reliability on these kits for almost a year before the SC Kits with their calibrations were released. From the engine, to the trans and IRS etc.
I am sure if someone acquires a manual transmission, throws a drag radial tire and goes to the strip launching at 4000+RPM they may be in for some trouble. However, maybe not. These newer cars and the advanced electronics, they can be tuned to save the engine and drivetrain.
On that note, I want a 6th Gen Auto with a TVS
