Hey Welshkiwi, another Aucklander here. I'm following your build and plans avidly. I'm not sure if you have those front indicators yet but I think they are the same as my old Lancia Fulvia. These are around. Lancia parts are available from specialists - I think there's someone in Hamilton selling them, certainly in Australia there are Lancia specialists with them. As an (expensive) example - Mr Fiat in USA sells them:
http://mrfiat.com/italian/lancia/ful...light-set.html
One place to ask for all things Fiat, Ferrari, Lancia, Alfa (classic and new) is Mal Simmonds at Dino Services in Cambridge - there's nothing he doesn't know about them and a nice guy to chat about alternative trim and lights with.
Good luck with the build!
Ross