I am building a Mk. V from the 1/72 Emhar Mk. IV, you can see a pic of the newly born Mk. V here www.arcor.de/palb/alben/92/625692/400_6 ... 393731.jpg.
As you can see I have built the version with the hoods over the exhaust grilles at the rear of both flanks. Now my question: I know photos with the exhaust grilles just plain open and those where the exhausts are covered with two hoods on each side. I am aware that many photos in the Osprey "White armor in the Russian civil war" show tanks with those hoods. Were they also used during the war and in Ireland, as these are two areas for which I would like to build dioramas? Was the distribution of tanks with open grilles and covered ones haphazard or dependent on climate or area? Any info around there?
You'll need to check photos. I'm not sure yet if anything factory-fitted was used, but their are certain styles. My guess is that the fittings went on at Central Workshops (Erin?) rather than in the UK, but I hav eseen what are obviously training Mk Vs with these things.
Sorry, but there is no simple answer - you'll just have to find a photo of a tank in the right place/time and follow that.