A company in South Australia sells an auto locking diff for Borgwarner & BTR diffs.
They are similar in operation to a detroit locker.
This unit goes by the name Lockright Lokka and sells for around $600.
Here's there web site www.4wdsystems.com.au
Has anyone had experiance with this unit.I did ring this company and the guy i spoke had only good things to say. But i wanna know more .