I saw someone was looking for these somewhere on Fiat Forum, so I'll stick it here and hopefully who ever it was will see it.

its useful to note you can convert a Fiat from 4*98PCD centre bore 58mm to VW 4*100 Centre bore 57.1mm or even a Porsche 5*130PCD centre bore 71.6mm http://www.performancealloys.com/alloy_wheels_adaptors.asp

Aaron.