Gino (and the rest) thanks very much - that Dodge article was the one I was thinking of in fact...
Cliff, As I now have 4 (FOUR) Italeri Gun Tractors, I imagine one of them will be the towing vehicle. Trouble was the shop had only one Quad and 25 pounder kit (which was cheaper than the 25 punder on its own... (work out the logic of that on if you will

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Rui, yes indeed I was in Porto. However, a very curious anomaly came up - for some reason the Italeri stuff is more expensive than it is here (4 hours drive away) whereas the Tamiya is loads cheaper.... Weird, weird, weird....Jim