hi,
if you want send it to yourself you can take contact with Interlink or parcelforce....both are cheap!
here you have a video of the gearbox in action:
http://www.youtube.com/watch?v=OOZYXWQNs-Y
here you have a video of one of our engine:
http://www.youtube.com/watch?v=X9cYgn400B8