Hey Alonso, I would give Shade Tree Enginetrics a call. Robert and Cindy have helped me with Fiat parts for my '71 850 Spider, and I am sure that they would have what you need. They are just outside of Dallas TX. 972-843-8134
i think there are two different hands of those depending on which side of the fixing posts it is required to be,
If you can please put an image on here.