CMP Water tank 15cwt

[chippyrail]

Can anyone help me with this problem? I am making a tank-wagon from an article in Military Modeller some years ago where Chris Davies tells you how to convert a Tomy/Peerless Max/Airfix/Italeri, Idon't think I missed any, 15cwt. CMP truck with cab 13. The problem is that I have not seen a Photo of the round tank as shown on Chris's model only the oval tanks as on most British tankers, does anybody know of a photo of the round tank version as I prefer to work to a plan with photos. I am being awkward & making a cab 12 version using the Tamiya Quad with resin LRDG desert wheels. Please Help!!!
Howard