I didn't know Abarth made wheels? I could be wrong?
There are the ones you can get from Fiat which have Abarth centre caps, but these are the only ones I know of.
I have Abarth wheels on my Bravo. They were on the car when I brought it so I don't know where they came from. I think I may have seen them in one of the online brochures (scanned) somewhere on Nigel's guide.
They were put on the car by the fiat dealer when i got it. They are actually 14" speedline alloys with the abarth center cap. I don't know what model. The center cap will fit pretty much any alloy that takes your fancy and can be got from here;