Make one. You'd need to get a single lamp grill, replace the red stripe with a a blue one, which you can either get from ebay or from your local motofactor. Then purchase an after market vw motorsport badge sold from various places.
However, there is a caveat, that unless you are packing more door, s/c'd, 16v, 4x4 power it'll be a bit naff, imho.
