FYI
Folks over at TheNewX.org and at ClubFrontier.org have been emailing Aussie Lockers for a solution for the front R180. I suggest you all do the same, so they know there's a market for it and we get our fix for the front diff.
I emailed them yesterday, this was their response:
"We are looking at the R180 and a couple of other Nissan models now. Possibly we will have something to announce in about 30 days but we are not making any commitments right now.
We appreciate your interest in the Aussie Locker."
Who knows, email them also on a possible locker for the R200 diffs on the rear of the Pathy, if there's demand they might develop the thing!
You can reach them here: Aussie Locker
cheers!