PWR kit comes with understandable instructions.
Ford doesn't cover the B-series warranty if an aftermarket transmission cooler is fitted. Although the Territory AWD came standard with one (the only Falcon-based I6 that has one).
If it is done properly though ... I don't see there being an issue at all. AFAIK the B-series used the radiator like the A-series anyway ... so it should still be installed in a similar fashion.
Just be careful with the condensor/radiator when installing the oil cooler ... don't want a damaged condensor/radiator.
Oh .. if you do it yourself ... expect no skin on your knuckles afterwards
:
The condensor is like a cheese grater.