Awesome truck!!! The Terra Crusher was a great truck(of course most of Tamiya's RCs are great
). Keep an eye on those integy parts, though. Integy has a reputation for making good looking, but fragile parts. I wasn't able to find a froward only transmission. If you do want parts or upgrade for it you could try ebay or tamiya directly.
http://www.tamiyausa.com/product/rcp...s&kit_id=43501
http://www.tamiyausa.com/product/rcp...=desc&offset=1