Xander:
This piece of 40k Scenery might easily be adapted for Chaos Dwarfs. 
http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat1310001&prodId=prod20008a
EDIT: Chaos Version c/o Clam
http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat1350001&prodId=prod30001a
Your thoughts?
GRNDL:
I think the Chaos Bastion would be a step closer… All those pointy bits…
tjub:
Hmm… I must say that this is a great idea, I think that I just might have to consider this. 
Bassman:
I think the shape could be really Chaos Dwarfish but really need to be customized. Being square it’s also really easy to be scratch built, saving some money…
Tarrakk Blackhand:
Needs more chaos parts! 
clam:
Hmmm!
If so - here you are
http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat1350001&prodId=prod30001a
Xander:
Hehe, didn’t know their was a Chaos One. That’s a better choice, obviously.
GRNDL:
Needz moar skullz!
This message was automatically appended because it was too short.
Canix:
The chaos one is ridiculously priced ,so your best bet is to get the Bastion and pimp it out CD style .:hat
Grimstonefire:
The laser gun thing ontop would make a decent death rocket or even a hellcannon with conversion. So for £17.60 you get a cool piece of terrain plus the start of a cool warmachine. Quite a good deal.
Thorne:
I think I woudl have to try to change one into a squat land train muhahahaha
GRNDL:
The chaos one is ridiculously priced ,so your best bet is to get the Bastion and pimp it out CD style .:hatYeah, who'd have thought that the Chaos Tank sprue is really worth $24?? LoL
Canix
snowblizz:
It is not "the" Chaos tank sprue. It is two Chaos "Spiky Bitz" sprues... I know they call 'em tank sprues but still. But at what I find is 5£ each they are a bit steep IMHO. Holy Hashut! They want £6 each from the bitz range. Now 2 of those for £6 would have been great, but that's just patently ridiculous. Another niche for 3rd party sculptors...The chaos one is ridiculously priced ,so your best bet is to get the Bastion and pimp it out CD style .:hatYeah, who'd have thought that the Chaos Tank sprue is really worth $24?? LoL
Canix
GRNDL
Grimstonefire:
I think I woudl have to try to change one into a squat land train muhahahahaStick two of these together, work some massive tracks in there somewhere = pure squat awesomeness! It would look like a moving castle.
Thorne
Swissdictator:
Isn’t there a song called Death Train? Might be appropriate.
Though that is pretty freaking cool. I have enough bits I could probably make the SM into Chaos… especially if I nurglefied it.
Hazkar:
nice idea
saw that model and thought"looks cool,but nothing i could use…"
but now i have to think about it again…
@thorne:go for it,that baby would look awesome,bring back the squats!!!
dedwrekka:
Isn't there a song called Death Train? Might be appropriate.Murder Train, Crazy Train... havn't heard Death Train
Though that is pretty freaking cool. I have enough bits I could probably make the SM into Chaos... especially if I nurglefied it.
Swissdictator
Baggronor:
With some cunning additions, that could look awesome
Maybe some skeletons in gibbets, chaosy/bulls head ornamentation or channels with molten metal running down them
tjub:
I think I woudl have to try to change one into a squat land train muhahahahaWhen Im "done" with CD atleast 2000pts or so I plan to go over my squats again, they need new bases and deserve to get a few things repainted. But the plan is to add a Kolossus, Ill make sure to show them of here sometime. But do please show us photos if you start something crazy! :)
Thorne
wallacer:
Interesting idea, although it doesn’t really look very mesopotamian to me…