Well, according to Fiat Sweden you can add another bushing on top of the old one. Aprox SEK 233,- each (2 on each side). It is an official Fiat action. The job is supposed to be easy as I have been told. Also told that the original bushing can not be repleced itself, the whole arm must be replaced it it is really bad. But the above action with another bushing should be considered as it would be reasonably cheap.
/Par Loner, Sweden