How similar is the '66 Valiant VC compared to my '66 US Dart?

I have been happily buying Australian Valiant parts from Blue Star Spares for about two decades now. Their website isn't as slick, though.

Oh, and BTW, if your car is Canadian-built, it may have a Canadian "Auto-Lite" (Prestolite) starter motor that is directly replaceable by an Australian direct-drive Bosch starter from an AP5-AP6-VC-VE with slant-6.