OK, I just joined: I couldn't wait, so I signed up. I have a build thread most relevant to here at Expedition Portal, though I also have one at Warfs (the Daihatsu site, I'm a mod there, which is something I know you are all excited about), Marlin Crawler (where I look for Toyota-specific information, as I decide whether I'm going shed the running gear and go full Toyota) and a few other places.
Through some internet sleuthing, it appears that the rear axle of these little Daihatsu beasts isn't actually unique to Daihatsu, but may be a clone of the AE-86 Corolla rear axle. The center section looks damn near identical, and the axle lengths are close enough to be plausible, as there are a variety of lengths, albeit close together. If this is true, and I can prove it, I might actually be able to install a locker in the rear, as there are none available. I'd even take an AE-86 LSD for that matter. The Rocky is quite solid off road, but not having a locker of some sort is something I am trying to solve.
Looking forward to seeing people in July!