I did order my spare parts in australia, it's slighlty more expensive than ebay, but shipping is fast and inexpensive, plus the owner seem to have good customer support (there is a forum as well).
http://www.plaig.com.au/store/
A 7700 kv motor in this ?
I'm not sure if it's a good idea, The drivetrain is already screaming to death when I goes full throttle with my 4600 kv.
The good news is that chassis allow to fit race type nimh pack, and the system to fix battery could be easily adapt/dremeled to fit some of these bad ass 2S race lipo pack
