yes that is the more powerful motor. If you want to take a shot a rewinding then buy a used one or an old one. If you can rewind well enough and use the right combination with turns and wire size then you can always guarantee more power then what the stock can push out.
I had read that the humminbird might be the new 14,000kv c05/m5 main motor from hobbyking here http://www.hobbyking.com/hobbyking/s...dProduct=25435
and here is a review of the 14,000kv m5/c05 motor from hk
They also have a tail motor too!!
here are some reviews here http://www.helifreak.com/showthread.php?t=452658