Thanks.
If I had thought a bit more on it, I would have placed the drum on the rear instead of the spare wheel as on the side would make it unstable.
The idea for the vehicle was as part of a long range reconnaissance strike team operating behind the Western Allied lines (Allied air superiority is not a feature of Konflikt'47). Rubicon 251 and 250 models will provide transport for infantry. They need to be fairly self sufficient, hence the fuel drums.
The setting is fine (for a "diesel-punk" setting) at the tactical level, strategically not so much as there would still be the same resource shortages that occurred in reality.
The Stug is still work in progress, I do worry about covering ventilation etc.