6th gear

I run a 2016 GT Premium w/performance pack with a Roush 2.3 supercharger. Running 305/30R20’s out back, 285/30R20’s up front. Last dyno’d at 645 to the wheels, so about 725 at the crank? Anyway, a few weeks ago I hit the gas too hard shifting into 6th and blew it up. My fault I know. I’ve...