After the 164 Procar got mentioned elsewhere I took a look around and came across these vids:

[ame="http://www.youtube.com/watch?v=p36U-ReVQO4"]Alfa Romeo 164 Pro Car - YouTube[/ame]

and

[ame="http://www.youtube.com/watch?v=cQigN057dMw"]Alfa Romeo 164 Procar V10 - YouTube[/ame]

Couple of things struck me, curious that they made it RHD, I guess that was down to the packaging of the whole thing. Also the quality of the rear shell is pretty damn good. When you see it being lifted off it looks exactly like a production car.