Aussie Hemi 6's

interesting Dan! do you know which ones?? bigger cid ones maybe?

The ones used in the luxury Valiant VIP models. Those got put in front of Torqueflite automatics; the ones in lesser cars got the grossly inferior BorgWarner BW-35 automatic which was crude, rough, noisy, and less efficient but was built in Australia -- a big advantage given Australia's local-content laws of the time. There are different versions of the 245 and 265 engines depending on what transmission they went in front of.