Hi Peter - Very good question...
To answer your question: "Why did you build it with a European license plate up front and a US style plate in the back?" - That's very simple - in Connecticut they don't need to have the US plates on front (like NJ-NY). And in CT I've seen many BMW, Porsche, and VW with custom Euro Plates on front and the registered license plates on back. Because I was building this kit for my brother that lives in CT, I decided to do that trend.