265 hemi straight six

Best way to obtain one is post on an Aussie Dart/Valiant site. In the late eighties I looked into importing one and there was an engine import company in Los Angeles, K. Watanabe, that specialized in importing engines from all over to America. As far as I know they are still in business. But if not I'm sure there are other importers who are willing. These engines were only used in Australia, not Europe nor US so if you want one, and can't find it in the US already, It will need to come from Australia.