Grigio,
I also own a Fiat Ritmo (Bravo) and couldn't source a towbar locally so went to a few towbar manufacturers to see if they could make one for the car, but no-one would touch it!
Seems that our ADRs get them spooked, so we found a towbar importer in Caboolture (north of Brisbane) who supplied my son with a towbar for his Punto straight from his stock and then we ordered a European towbar for the Ritmo from him as well, which had to come from Poland, but had the wiring kit (including the ECU kit) as well and it all worked out well. Took a few months to get here (Sydney) and cost $648.70 including freight. Look them up on
www.towbarsaustralia.com.auThe towbar is supposed to comply with ADRs.
Cheers,