Dunno if you're still in contact with whoever you sold your Fiats to but having seen the pics this may come in handy to one of them....
cgi.ebay.co.uk/FIAT-131-MIRAFIORI-DOOR_W0QQitemZ4569163584QQcategoryZ31352QQrdZ1QQcmdZViewItem
cgi.ebay.co.uk/FIAT-131-MIRAFIORI-DOOR_W0QQitemZ4569163584QQcategoryZ31352QQrdZ1QQcmdZViewItem