I'm struggling here. I have the Fiat Official Workshop Manuals for the for the Regata (as I owned a 70S) and this module is not appearing. Your picture suggest 7 pins. No 7 pin devices associated with ignition etc. 8 yes.
Also web searching this modules appears to be an "ignition cut off" (used on Lancia Delta) as opposed to an ignition main module.
Need more information about what you have and think it's function is. Also why you want to fit it etc.?