BTW - what happend with roof? On first render it looks flat.

Never mind that, to make these renders I moved the template picture forward and backward, making some parts of the car more or less visible.

Loaded up into UVmapper for a quick play and apart from a few small bits found that mapping it was a joy.

Not a UV-mapper myself I could use your UV-maps. I already prepared a set of "authentic colours" as shaders, with an UV-mapped vehicle I could also make some nice textures, such as Volkspolizei or Feuerwehr.

 

 

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