Your digital search skills are clearly much more advanced than mine as I am something of a luddite that uses the internet as an evil necessity, so your advice is appreciated, but not of great assistance if I don't know the first part of the answer; the manufacturer 
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So, is it the Silvercar kart, made by Motori Garelli?
I shared that information so that you and others here could run Google searches for the relevant terms (e.g., "Motori Garelli" and "kart"), and then confidently eliminate manufacturers whenever the results failed to yield the puzzle image. This allows for testing various possibilities in rapid succession instead of posting queries one at a time and waiting (hours?) in between each query for my response. But your methods seem to be working just fine, so no worries.
Not Motori Garelli, by the way.
