But if you know somebody with a convincing Kiwi accent you might be able to use that new 11 labs feature which basically applies a voice filter.
Funny enough I just tried this with the original Temuera Morrison lines on the Blu-Ray using Battlefront II lines as the voice sample and it worked. It doesn’t sound any better than the original Blu-Ray lines though, just different. We’d need someone with a kiwi accent who can record a better delivery of the lines.
EDIT: Surprisingly, spelling things out phonetically helps a lot. I put some more tests in the folder.