Funny thing, I just spent the weekend with Scott Mann from Renegade Hybrids doing a DE instructor training course. He said the 996 V8 has been bulletproof and there is a 2001 Box S roller sitting in his shop right now getting ready for a 430 HP LS3 motor. Yes this can be done now!
Here is a little teaser:
http://www.youtube.com/watch?v=i3GXpKRTCIw