Looks good, noting that it is a 6 pinion design and not a 4 pinion as in the original. Should be nice and strong.

I dont think there should be any problems with the halfshaft spline strength you talked about earlier, as the punishment the Dave has metered out (on rocks) and the destruction of the diffs that I have done (general abuse, and "Damned Kia, how the f*** did that get up there?) have not affected the splines on the halfshafts.

The only technical issue you could bring to the attention of the manufacturer would be to replace the crush tube with a solid spacer and shims between the front and rear bearings on the (main) pinion. I would suggest that he looks at producing the spacer as a part of the upgrade, as the crush tubes can deform more than they should, allowing the pinion to "walk" up the ring, leading to misalignment and destrction of the ring/pinion (I believe this was a contributing factor in one of my "grenades")