Most outlets have a company they deal with who supply and fit these as it is something mechanics don't normally do. Maybe if you ask they can put you in contact. Also you could come up a psuedo Abarth decal at a fraction of the price.
I managed to get a guy here in Glasgow that sells through Ebay. He fitted it for me too and he did a great job (for less than the cost of the official stripes!) He also supplied and fitted many graphics for the Arnold Clark branches up here so he seems to know his stuff.
Just tell him that I recommended him in case he offers me a discount next time
Its Fox Signs, Glasgow and hes on facebook if anyone needs anything.