not quite sure what you you are looking for, any graphics will fit on a bonnet, other than that, mini only did a few variations, as I recall, so just a matter of designing your own, or have I missed the point?
Ive never seen a template but I did my own ages ago. Its not that hard and if I can do one then anyone can. I found the old Mini to be harder than the new one but still was just a case of measuring a set that were on a friends car and away I went.
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