the a10 model was sold as the 1600 in america,so i think you'll find they're the same model.we didn't get a10 wagons in australia,so can't confirm about the h190,all we got were sedans with h165's,until they started assembling them locally,when they got an australian made borg warner diff.the original 1600 wagons (510's) also had h190's,but are hard to find.