Stock is fine at 650 hp. The installer has a lot to do with this.
If you got the cash and your already planning on digging in to the trans it wont hurt.
And you get a smokin deal on one... Do it! Lol!
On the DroidX
Most stock flex plates were installed by GM.
I have seen quite a few faliures and didnt want to take any chances so Henry hooked me up with 1 at my request
Make sure you check fitness on converter pilot. Most need to be machined or you will destroy the pump.
I've been running 10's for 3 years at 7000+ lbs on stock flexplate