I heard that it also can fly and drive under water... the LSD has already been confirmed to be limited to handling 300lbs of torque versus the 260lbs planned, and if you buy into the rumours the srt was delayed because of breaking drivetrain parts and the team was working on the torque control/mounts/suspension etc. to make it drivable.
380hp is a pipe dream... based on everything else we know it would be more like 280hp if it were to be anything different than the 300hp they claimed, which i doubt.
300 hp has been pretty much declared and unlikely to change either up or down. The SRT boys are working to make it all available and still tolerable re: vehicle dynamics. I don't think breakage is the issue at all. It's now all about managing the inherent issues with that much power only to the front wheels. My feeling is they are going to release the best technical compromise on a high power front driver. Should be awesome