There actually is a plastic injection kit of Danboard!
http://www.hlj.com/product/KBYKP-208/Fig
There are any number of Japanese Giant Robot Suit models from Gundam, Dougram, Macross, Frame Arms and so on that might be used. Have a look on Hobby Link Japan and other specialist suppliers of
Nothing gives the same mediaeval techno plate armour look as the
GW kit, though.