Okay, so, I know the Orks can't REALLY loot a Devilfish or Hammerhead.
That's not to say they wouldn't try though. And, with enough MekBoys, and Orky ingenuity, They could make it work. Sort of. So, whilst It may not be a skimmer anymore, and those fancy pulse weapons may be gone, it did at least START it's life as a Tau tank.
It'll use the Ork VDR rules when it's done. I think it's a Longrange ZZap gun for the main turret and a couple TwinLinked big shootas in cupolas down front. Red Paint Job, and all the goodies, at the end.
Of course, those fancy Tau engines don't do the Orks any good, so... they rig themselves up a nice big Internal Combustion engine in the passenger bay. (1/24th Chevy 427) A few pieces from some old model kits (front suspension, rear axle, engine) a little chopping of the tank kit, a few brass bits for leaf springs, and we get a rolling Hammerhead. The nacelles will be plenty Orkified, as will the cockpit.
Right now it's preliminary fittings, and rough construction. The engine's not glued, which is why it's laying on it's side right now. Kinda forgot to set that up when I took the snapshot. Plenty of things that need to be covered, or gouged out, or built up. Anyway, Images of it now.
I know this is only a single model project, but I will be updating as I go on it, and it will probably be fairly longterm, as I realize small bitz and pieces that I'll need to continue, etc. I figured this was the most appropriate place for it.