Here is the concept sketch for the Feral Ork Steam Gargant from the Fanatic Display at UK GamesDay 2004.
You can see the resin of the actual model in this picture.
I do like this model (and I suspect we may get a Forgeworld version one day).
Here is a picture (taken at GamesDay 2004) of the Fanatic Feral Ork Steam Gargant.
It’s a very nice model.