If you are able to speak Italian, you can work with these guys in Italy:
www.carrozzeriadragoni.com
I got a bunch of stuff from them for my Giulia Super. All the other "english speaking" firms in Germany and the UK get their stuff from Italy anyway. It all depends upon what you need and how much you want to spend. In my case, after a bunch of research, I went directly to the homeland. Good luck with your project!