Possible project? IG counts-as

Hey, lots of good discussion in my new Ork army thread. I feel so loved :D

Magicjuggler made an interesting comment about using his Orks with the Blood Angel rules, Blood Axes.

I saw this over on BoLS, an Ork army using IG rules. Huh, I mused, that sounds sweet. Then I check up on MBG's blog, Spiky Bitz. This and this was enough to get me thinking.

Well, since I don't like the current Ork Codex at all, but I love Orks, I though I could do something about it.

Wave Serpent -> Battlewagon?

Just got a Wave Serpent in a trade, and I want to turn it into a Battlewagon.

Any ideas?

Update:

Found an old 2nd edition Rhino. Let the Mekanikal mayhem began anew!