Thanks Deecee.
Well after being screwed around badly by one diff shop, I was finally put on to a guy that was able to make me up a diff the way I wanted for a pretty good price, so it started life under an Aussie 1993 Ford Falcon, it has discs as you can see, its 3.45.1, 28 spline, LSD, shortened to suit, all up $1,650.
I just have to get the handbrake cables which Pentastar Parts & restorations in Sydney have to suit, and do the brake lines.
Just glad its finally done!