I think they fit, they have the same (or less) dimension of the orion 4800 lipo, the only things you have to do is to solder the corally connetor at 90° degree and connect the battery before placing into the car.
Look at this picture:
http://www.iouppo.com/pics2/7b544a31...9d2cea6235.bmp
Bye
Ema